Home / 143,413,411.40-215,438,981.70-137,992,713.20

Finding the Fourth Proportional to 143,413,411.40, 215,438,981.70 and 137,992,713.20

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Solution

The fourth proportional to 143,413,411.40, 215,438,981.70 and 137,992,713.20 is: 207,295,882.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,413,411.40 : 215,438,981.70 = 137,992,713.20 : x
  2. Step 2: Convert to fraction form
    143,413,411.40/215,438,981.70 = 137,992,713.20/x
  3. Step 3: Cross multiply
    143,413,411.40x = 215,438,981.70 × 137,992,713.20
  4. Step 4: Simplify right side
    143,413,411.40x = 29,729,009,613,828,144
  5. Step 5: Solve for x
    x = 29,729,009,613,828,144/143,413,411.40
  6. Step 6: Final answer
    x = 207,295,882.05

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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.