Home / 128,897,612.38-177,882,488.40-70,164,109

Finding the Fourth Proportional to 128,897,612.38, 177,882,488.40 and 70,164,109

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Solution

The fourth proportional to 128,897,612.38, 177,882,488.40 and 70,164,109 is: 96,828,529.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,897,612.38 : 177,882,488.40 = 70,164,109 : x
  2. Step 2: Convert to fraction form
    128,897,612.38/177,882,488.40 = 70,164,109/x
  3. Step 3: Cross multiply
    128,897,612.38x = 177,882,488.40 × 70,164,109
  4. Step 4: Simplify right side
    128,897,612.38x = 12,480,966,305,288,836
  5. Step 5: Solve for x
    x = 12,480,966,305,288,836/128,897,612.38
  6. Step 6: Final answer
    x = 96,828,529.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.