Home / 78,732,187.40-118,098,281.10-66,261,038.60

Finding the Fourth Proportional to 78,732,187.40, 118,098,281.10 and 66,261,038.60

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Solution

The fourth proportional to 78,732,187.40, 118,098,281.10 and 66,261,038.60 is: 99,391,557.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,187.40 : 118,098,281.10 = 66,261,038.60 : x
  2. Step 2: Convert to fraction form
    78,732,187.40/118,098,281.10 = 66,261,038.60/x
  3. Step 3: Cross multiply
    78,732,187.40x = 118,098,281.10 × 66,261,038.60
  4. Step 4: Simplify right side
    78,732,187.40x = 7,825,314,762,560,750
  5. Step 5: Solve for x
    x = 7,825,314,762,560,750/78,732,187.40
  6. Step 6: Final answer
    x = 99,391,557.90

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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.