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Finding the Fourth Proportional to 158,124.90, 218,211.58 and 86,503.62

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Solution

The fourth proportional to 158,124.90, 218,211.58 and 86,503.62 is: 119,374.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,124.90 : 218,211.58 = 86,503.62 : x
  2. Step 2: Convert to fraction form
    158,124.90/218,211.58 = 86,503.62/x
  3. Step 3: Cross multiply
    158,124.90x = 218,211.58 × 86,503.62
  4. Step 4: Simplify right side
    158,124.90x = 18,876,090,072.34
  5. Step 5: Solve for x
    x = 18,876,090,072.34/158,124.90
  6. Step 6: Final answer
    x = 119,374.56

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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.