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Finding the Fourth Proportional to 123,937.60, 170,637.60 and 105,044.80

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Solution

The fourth proportional to 123,937.60, 170,637.60 and 105,044.80 is: 144,625.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,937.60 : 170,637.60 = 105,044.80 : x
  2. Step 2: Convert to fraction form
    123,937.60/170,637.60 = 105,044.80/x
  3. Step 3: Cross multiply
    123,937.60x = 170,637.60 × 105,044.80
  4. Step 4: Simplify right side
    123,937.60x = 17,924,592,564.48
  5. Step 5: Solve for x
    x = 17,924,592,564.48/123,937.60
  6. Step 6: Final answer
    x = 144,625.95

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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.