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Finding the Fourth Proportional to 124,612.80, 186,962.40 and 54,542.40

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Solution

The fourth proportional to 124,612.80, 186,962.40 and 54,542.40 is: 81,832.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,612.80 : 186,962.40 = 54,542.40 : x
  2. Step 2: Convert to fraction form
    124,612.80/186,962.40 = 54,542.40/x
  3. Step 3: Cross multiply
    124,612.80x = 186,962.40 × 54,542.40
  4. Step 4: Simplify right side
    124,612.80x = 10,197,378,005.76
  5. Step 5: Solve for x
    x = 10,197,378,005.76/124,612.80
  6. Step 6: Final answer
    x = 81,832.51

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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.