Home / 158,122.78-218,214.60-86,502.81

Finding the Fourth Proportional to 158,122.78, 218,214.60 and 86,502.81

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Solution

The fourth proportional to 158,122.78, 218,214.60 and 86,502.81 is: 119,376.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,122.78 : 218,214.60 = 86,502.81 : x
  2. Step 2: Convert to fraction form
    158,122.78/218,214.60 = 86,502.81/x
  3. Step 3: Cross multiply
    158,122.78x = 218,214.60 × 86,502.81
  4. Step 4: Simplify right side
    158,122.78x = 18,876,175,264.72
  5. Step 5: Solve for x
    x = 18,876,175,264.72/158,122.78
  6. Step 6: Final answer
    x = 119,376.70

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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.