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Finding the Fourth Proportional to 121,345.64, 182,100.48 and 42,460.55

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Solution

The fourth proportional to 121,345.64, 182,100.48 and 42,460.55 is: 63,719.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,345.64 : 182,100.48 = 42,460.55 : x
  2. Step 2: Convert to fraction form
    121,345.64/182,100.48 = 42,460.55/x
  3. Step 3: Cross multiply
    121,345.64x = 182,100.48 × 42,460.55
  4. Step 4: Simplify right side
    121,345.64x = 7,732,087,292.95
  5. Step 5: Solve for x
    x = 7,732,087,292.95/121,345.64
  6. Step 6: Final answer
    x = 63,719.53

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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.