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Finding the Fourth Proportional to 124,963.60, 187,445.40 and 115,340.80

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Solution

The fourth proportional to 124,963.60, 187,445.40 and 115,340.80 is: 173,011.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,963.60 : 187,445.40 = 115,340.80 : x
  2. Step 2: Convert to fraction form
    124,963.60/187,445.40 = 115,340.80/x
  3. Step 3: Cross multiply
    124,963.60x = 187,445.40 × 115,340.80
  4. Step 4: Simplify right side
    124,963.60x = 21,620,102,392.32
  5. Step 5: Solve for x
    x = 21,620,102,392.32/124,963.60
  6. Step 6: Final answer
    x = 173,011.20

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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.