Home / 145,861,289.40-218,825,111.70-85,245,814.20

Finding the Fourth Proportional to 145,861,289.40, 218,825,111.70 and 85,245,814.20

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Solution

The fourth proportional to 145,861,289.40, 218,825,111.70 and 85,245,814.20 is: 127,888,111.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,861,289.40 : 218,825,111.70 = 85,245,814.20 : x
  2. Step 2: Convert to fraction form
    145,861,289.40/218,825,111.70 = 85,245,814.20/x
  3. Step 3: Cross multiply
    145,861,289.40x = 218,825,111.70 × 85,245,814.20
  4. Step 4: Simplify right side
    145,861,289.40x = 18,653,924,814,272,444
  5. Step 5: Solve for x
    x = 18,653,924,814,272,444/145,861,289.40
  6. Step 6: Final answer
    x = 127,888,111.31

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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.