Home / 158,135.29-218,229.15-86,516.50

Finding the Fourth Proportional to 158,135.29, 218,229.15 and 86,516.50

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Solution

The fourth proportional to 158,135.29, 218,229.15 and 86,516.50 is: 119,394.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,135.29 : 218,229.15 = 86,516.50 : x
  2. Step 2: Convert to fraction form
    158,135.29/218,229.15 = 86,516.50/x
  3. Step 3: Cross multiply
    158,135.29x = 218,229.15 × 86,516.50
  4. Step 4: Simplify right side
    158,135.29x = 18,880,423,017.84
  5. Step 5: Solve for x
    x = 18,880,423,017.84/158,135.29
  6. Step 6: Final answer
    x = 119,394.12

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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.