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Finding the Fourth Proportional to 118,573,264.70, 177,859,897.05 and 77,889,815.90

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Solution

The fourth proportional to 118,573,264.70, 177,859,897.05 and 77,889,815.90 is: 116,834,723.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,573,264.70 : 177,859,897.05 = 77,889,815.90 : x
  2. Step 2: Convert to fraction form
    118,573,264.70/177,859,897.05 = 77,889,815.90/x
  3. Step 3: Cross multiply
    118,573,264.70x = 177,859,897.05 × 77,889,815.90
  4. Step 4: Simplify right side
    118,573,264.70x = 13,853,474,637,217,456
  5. Step 5: Solve for x
    x = 13,853,474,637,217,456/118,573,264.70
  6. Step 6: Final answer
    x = 116,834,723.85

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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.