Home / 78,732,185.40-118,098,278.10-66,261,036.60

Finding the Fourth Proportional to 78,732,185.40, 118,098,278.10 and 66,261,036.60

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Solution

The fourth proportional to 78,732,185.40, 118,098,278.10 and 66,261,036.60 is: 99,391,554.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,185.40 : 118,098,278.10 = 66,261,036.60 : x
  2. Step 2: Convert to fraction form
    78,732,185.40/118,098,278.10 = 66,261,036.60/x
  3. Step 3: Cross multiply
    78,732,185.40x = 118,098,278.10 × 66,261,036.60
  4. Step 4: Simplify right side
    78,732,185.40x = 7,825,314,327,581,078
  5. Step 5: Solve for x
    x = 7,825,314,327,581,078/78,732,185.40
  6. Step 6: Final answer
    x = 99,391,554.90

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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.