Home / 142,441,859.20-213,886,737.60-81,975,683.20

Finding the Fourth Proportional to 142,441,859.20, 213,886,737.60 and 81,975,683.20

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Solution

The fourth proportional to 142,441,859.20, 213,886,737.60 and 81,975,683.20 is: 123,092,407.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,441,859.20 : 213,886,737.60 = 81,975,683.20 : x
  2. Step 2: Convert to fraction form
    142,441,859.20/213,886,737.60 = 81,975,683.20/x
  3. Step 3: Cross multiply
    142,441,859.20x = 213,886,737.60 × 81,975,683.20
  4. Step 4: Simplify right side
    142,441,859.20x = 17,533,511,442,179,128
  5. Step 5: Solve for x
    x = 17,533,511,442,179,128/142,441,859.20
  6. Step 6: Final answer
    x = 123,092,407.95

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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.