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Finding the Fourth Proportional to 139,884,806.40, 209,827,209.60 and 88,866,470.40

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Solution

The fourth proportional to 139,884,806.40, 209,827,209.60 and 88,866,470.40 is: 133,299,705.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,884,806.40 : 209,827,209.60 = 88,866,470.40 : x
  2. Step 2: Convert to fraction form
    139,884,806.40/209,827,209.60 = 88,866,470.40/x
  3. Step 3: Cross multiply
    139,884,806.40x = 209,827,209.60 × 88,866,470.40
  4. Step 4: Simplify right side
    139,884,806.40x = 18,646,603,511,032,996
  5. Step 5: Solve for x
    x = 18,646,603,511,032,996/139,884,806.40
  6. Step 6: Final answer
    x = 133,299,705.60

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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.