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Finding the Fourth Proportional to 137,896,241.60, 206,844,362.40 and 80,453,374.40

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Solution

The fourth proportional to 137,896,241.60, 206,844,362.40 and 80,453,374.40 is: 120,680,061.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,896,241.60 : 206,844,362.40 = 80,453,374.40 : x
  2. Step 2: Convert to fraction form
    137,896,241.60/206,844,362.40 = 80,453,374.40/x
  3. Step 3: Cross multiply
    137,896,241.60x = 206,844,362.40 × 80,453,374.40
  4. Step 4: Simplify right side
    137,896,241.60x = 16,641,326,930,696,484
  5. Step 5: Solve for x
    x = 16,641,326,930,696,484/137,896,241.60
  6. Step 6: Final answer
    x = 120,680,061.60

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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.