Home / 158,451.74-218,663.55-86,831.92

Finding the Fourth Proportional to 158,451.74, 218,663.55 and 86,831.92

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Solution

The fourth proportional to 158,451.74, 218,663.55 and 86,831.92 is: 119,828.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,451.74 : 218,663.55 = 86,831.92 : x
  2. Step 2: Convert to fraction form
    158,451.74/218,663.55 = 86,831.92/x
  3. Step 3: Cross multiply
    158,451.74x = 218,663.55 × 86,831.92
  4. Step 4: Simplify right side
    158,451.74x = 18,986,974,353.04
  5. Step 5: Solve for x
    x = 18,986,974,353.04/158,451.74
  6. Step 6: Final answer
    x = 119,828.13

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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.