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Finding the Fourth Proportional to 134,810.76, 186,035.76 and 74,387.10

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Solution

The fourth proportional to 134,810.76, 186,035.76 and 74,387.10 is: 102,652.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,810.76 : 186,035.76 = 74,387.10 : x
  2. Step 2: Convert to fraction form
    134,810.76/186,035.76 = 74,387.10/x
  3. Step 3: Cross multiply
    134,810.76x = 186,035.76 × 74,387.10
  4. Step 4: Simplify right side
    134,810.76x = 13,838,660,682.70
  5. Step 5: Solve for x
    x = 13,838,660,682.70/134,810.76
  6. Step 6: Final answer
    x = 102,652.49

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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.