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Finding the Fourth Proportional to 128,951,807.80, 193,427,711.70 and 113,835,263.80

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Solution

The fourth proportional to 128,951,807.80, 193,427,711.70 and 113,835,263.80 is: 170,752,895.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,951,807.80 : 193,427,711.70 = 113,835,263.80 : x
  2. Step 2: Convert to fraction form
    128,951,807.80/193,427,711.70 = 113,835,263.80/x
  3. Step 3: Cross multiply
    128,951,807.80x = 193,427,711.70 × 113,835,263.80
  4. Step 4: Simplify right side
    128,951,807.80x = 22,018,894,587,599,844
  5. Step 5: Solve for x
    x = 22,018,894,587,599,844/128,951,807.80
  6. Step 6: Final answer
    x = 170,752,895.70

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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.