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Finding the Fourth Proportional to 178,420.40, 267,403.80 and 73,120.40

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Solution

The fourth proportional to 178,420.40, 267,403.80 and 73,120.40 is: 109,587.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,420.40 : 267,403.80 = 73,120.40 : x
  2. Step 2: Convert to fraction form
    178,420.40/267,403.80 = 73,120.40/x
  3. Step 3: Cross multiply
    178,420.40x = 267,403.80 × 73,120.40
  4. Step 4: Simplify right side
    178,420.40x = 19,552,672,817.52
  5. Step 5: Solve for x
    x = 19,552,672,817.52/178,420.40
  6. Step 6: Final answer
    x = 109,587.65

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1.5x scale

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.