Home / 138,732,128.20-207,899,126.70-102,054,291.40

Finding the Fourth Proportional to 138,732,128.20, 207,899,126.70 and 102,054,291.40

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Solution

The fourth proportional to 138,732,128.20, 207,899,126.70 and 102,054,291.40 is: 152,935,000.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,732,128.20 : 207,899,126.70 = 102,054,291.40 : x
  2. Step 2: Convert to fraction form
    138,732,128.20/207,899,126.70 = 102,054,291.40/x
  3. Step 3: Cross multiply
    138,732,128.20x = 207,899,126.70 × 102,054,291.40
  4. Step 4: Simplify right side
    138,732,128.20x = 21,216,998,058,047,320
  5. Step 5: Solve for x
    x = 21,216,998,058,047,320/138,732,128.20
  6. Step 6: Final answer
    x = 152,935,000.23

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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.