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Finding the Fourth Proportional to 123,159.95, 169,962.62 and 72,160.47

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Solution

The fourth proportional to 123,159.95, 169,962.62 and 72,160.47 is: 99,582.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,159.95 : 169,962.62 = 72,160.47 : x
  2. Step 2: Convert to fraction form
    123,159.95/169,962.62 = 72,160.47/x
  3. Step 3: Cross multiply
    123,159.95x = 169,962.62 × 72,160.47
  4. Step 4: Simplify right side
    123,159.95x = 12,264,582,541.63
  5. Step 5: Solve for x
    x = 12,264,582,541.63/123,159.95
  6. Step 6: Final answer
    x = 99,582.56

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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.