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Finding the Fourth Proportional to 185,478.17, 278,030.28 and 73,114.87

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Solution

The fourth proportional to 185,478.17, 278,030.28 and 73,114.87 is: 109,598.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,478.17 : 278,030.28 = 73,114.87 : x
  2. Step 2: Convert to fraction form
    185,478.17/278,030.28 = 73,114.87/x
  3. Step 3: Cross multiply
    185,478.17x = 278,030.28 × 73,114.87
  4. Step 4: Simplify right side
    185,478.17x = 20,328,147,778.26
  5. Step 5: Solve for x
    x = 20,328,147,778.26/185,478.17
  6. Step 6: Final answer
    x = 109,598.60

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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.