Home / 158,001.72-218,042.36-86,381.73

Finding the Fourth Proportional to 158,001.72, 218,042.36 and 86,381.73

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Solution

The fourth proportional to 158,001.72, 218,042.36 and 86,381.73 is: 119,206.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,001.72 : 218,042.36 = 86,381.73 : x
  2. Step 2: Convert to fraction form
    158,001.72/218,042.36 = 86,381.73/x
  3. Step 3: Cross multiply
    158,001.72x = 218,042.36 × 86,381.73
  4. Step 4: Simplify right side
    158,001.72x = 18,834,875,179.87
  5. Step 5: Solve for x
    x = 18,834,875,179.87/158,001.72
  6. Step 6: Final answer
    x = 119,206.77

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1.5x scale

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.