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Finding the Fourth Proportional to 134,767.61, 185,980.60 and 74,340.80

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Solution

The fourth proportional to 134,767.61, 185,980.60 and 74,340.80 is: 102,591.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,767.61 : 185,980.60 = 74,340.80 : x
  2. Step 2: Convert to fraction form
    134,767.61/185,980.60 = 74,340.80/x
  3. Step 3: Cross multiply
    134,767.61x = 185,980.60 × 74,340.80
  4. Step 4: Simplify right side
    134,767.61x = 13,825,946,588.48
  5. Step 5: Solve for x
    x = 13,825,946,588.48/134,767.61
  6. Step 6: Final answer
    x = 102,591.02

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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.