Home / 79,145,870.40-118,718,805.60-66,391,286.40

Finding the Fourth Proportional to 79,145,870.40, 118,718,805.60 and 66,391,286.40

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Solution

The fourth proportional to 79,145,870.40, 118,718,805.60 and 66,391,286.40 is: 99,586,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,145,870.40 : 118,718,805.60 = 66,391,286.40 : x
  2. Step 2: Convert to fraction form
    79,145,870.40/118,718,805.60 = 66,391,286.40/x
  3. Step 3: Cross multiply
    79,145,870.40x = 118,718,805.60 × 66,391,286.40
  4. Step 4: Simplify right side
    79,145,870.40x = 7,881,894,223,655,523
  5. Step 5: Solve for x
    x = 7,881,894,223,655,523/79,145,870.40
  6. Step 6: Final answer
    x = 99,586,929.60

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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.