Home / 147,905,129.20-221,857,693.80-90,509,501.20

Finding the Fourth Proportional to 147,905,129.20, 221,857,693.80 and 90,509,501.20

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Solution

The fourth proportional to 147,905,129.20, 221,857,693.80 and 90,509,501.20 is: 135,764,251.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,905,129.20 : 221,857,693.80 = 90,509,501.20 : x
  2. Step 2: Convert to fraction form
    147,905,129.20/221,857,693.80 = 90,509,501.20/x
  3. Step 3: Cross multiply
    147,905,129.20x = 221,857,693.80 × 90,509,501.20
  4. Step 4: Simplify right side
    147,905,129.20x = 20,080,229,203,220,336
  5. Step 5: Solve for x
    x = 20,080,229,203,220,336/147,905,129.20
  6. Step 6: Final answer
    x = 135,764,251.80

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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.