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Finding the Fourth Proportional to 123,574.60, 170,490.18 and 73,289.80

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Solution

The fourth proportional to 123,574.60, 170,490.18 and 73,289.80 is: 101,114.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,574.60 : 170,490.18 = 73,289.80 : x
  2. Step 2: Convert to fraction form
    123,574.60/170,490.18 = 73,289.80/x
  3. Step 3: Cross multiply
    123,574.60x = 170,490.18 × 73,289.80
  4. Step 4: Simplify right side
    123,574.60x = 12,495,191,194.16
  5. Step 5: Solve for x
    x = 12,495,191,194.16/123,574.60
  6. Step 6: Final answer
    x = 101,114.56

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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.