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Finding the Fourth Proportional to 135,184.80, 186,545.16 and 74,756.16

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Solution

The fourth proportional to 135,184.80, 186,545.16 and 74,756.16 is: 103,158.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,184.80 : 186,545.16 = 74,756.16 : x
  2. Step 2: Convert to fraction form
    135,184.80/186,545.16 = 74,756.16/x
  3. Step 3: Cross multiply
    135,184.80x = 186,545.16 × 74,756.16
  4. Step 4: Simplify right side
    135,184.80x = 13,945,399,828.19
  5. Step 5: Solve for x
    x = 13,945,399,828.19/135,184.80
  6. Step 6: Final answer
    x = 103,158.05

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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.