Home / 81,080,838,005.20-121,621,257,007.80-81,080,838,005.20

Finding the Fourth Proportional to 81,080,838,005.20, 121,621,257,007.80 and 81,080,838,005.20

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Solution

The fourth proportional to 81,080,838,005.20, 121,621,257,007.80 and 81,080,838,005.20 is: 121,621,257,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,080,838,005.20 : 121,621,257,007.80 = 81,080,838,005.20 : x
  2. Step 2: Convert to fraction form
    81,080,838,005.20/121,621,257,007.80 = 81,080,838,005.20/x
  3. Step 3: Cross multiply
    81,080,838,005.20x = 121,621,257,007.80 × 81,080,838,005.20
  4. Step 4: Simplify right side
    81,080,838,005.20x = 9,861,153,437,438,227,513,344
  5. Step 5: Solve for x
    x = 9,861,153,437,438,227,513,344/81,080,838,005.20
  6. Step 6: Final answer
    x = 121,621,257,007.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.