Home / 149,612.18-206,436.56-89,188.45

Finding the Fourth Proportional to 149,612.18, 206,436.56 and 89,188.45

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Solution

The fourth proportional to 149,612.18, 206,436.56 and 89,188.45 is: 123,063.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,612.18 : 206,436.56 = 89,188.45 : x
  2. Step 2: Convert to fraction form
    149,612.18/206,436.56 = 89,188.45/x
  3. Step 3: Cross multiply
    149,612.18x = 206,436.56 × 89,188.45
  4. Step 4: Simplify right side
    149,612.18x = 18,411,756,516.61
  5. Step 5: Solve for x
    x = 18,411,756,516.61/149,612.18
  6. Step 6: Final answer
    x = 123,063.22

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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.