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Finding the Fourth Proportional to 158,545.78, 218,793.10 and 86,924.28

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Solution

The fourth proportional to 158,545.78, 218,793.10 and 86,924.28 is: 119,955.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,545.78 : 218,793.10 = 86,924.28 : x
  2. Step 2: Convert to fraction form
    158,545.78/218,793.10 = 86,924.28/x
  3. Step 3: Cross multiply
    158,545.78x = 218,793.10 × 86,924.28
  4. Step 4: Simplify right side
    158,545.78x = 19,018,432,686.47
  5. Step 5: Solve for x
    x = 19,018,432,686.47/158,545.78
  6. Step 6: Final answer
    x = 119,955.46

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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.