Home / 158,494.19-218,723.49-86,875.61

Finding the Fourth Proportional to 158,494.19, 218,723.49 and 86,875.61

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Solution

The fourth proportional to 158,494.19, 218,723.49 and 86,875.61 is: 119,889.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,494.19 : 218,723.49 = 86,875.61 : x
  2. Step 2: Convert to fraction form
    158,494.19/218,723.49 = 86,875.61/x
  3. Step 3: Cross multiply
    158,494.19x = 218,723.49 × 86,875.61
  4. Step 4: Simplify right side
    158,494.19x = 19,001,735,521.46
  5. Step 5: Solve for x
    x = 19,001,735,521.46/158,494.19
  6. Step 6: Final answer
    x = 119,889.17

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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.