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Finding the Fourth Proportional to 124,813.80, 187,220.70 and 89,384.40

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Solution

The fourth proportional to 124,813.80, 187,220.70 and 89,384.40 is: 134,076.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,813.80 : 187,220.70 = 89,384.40 : x
  2. Step 2: Convert to fraction form
    124,813.80/187,220.70 = 89,384.40/x
  3. Step 3: Cross multiply
    124,813.80x = 187,220.70 × 89,384.40
  4. Step 4: Simplify right side
    124,813.80x = 16,734,609,937.08
  5. Step 5: Solve for x
    x = 16,734,609,937.08/124,813.80
  6. Step 6: Final answer
    x = 134,076.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.