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Finding the Fourth Proportional to 178,411.40, 267,390.30 and 73,111.40

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Solution

The fourth proportional to 178,411.40, 267,390.30 and 73,111.40 is: 109,574.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,411.40 : 267,390.30 = 73,111.40 : x
  2. Step 2: Convert to fraction form
    178,411.40/267,390.30 = 73,111.40/x
  3. Step 3: Cross multiply
    178,411.40x = 267,390.30 × 73,111.40
  4. Step 4: Simplify right side
    178,411.40x = 19,549,279,179.42
  5. Step 5: Solve for x
    x = 19,549,279,179.42/178,411.40
  6. Step 6: Final answer
    x = 109,574.16

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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.