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Finding the Fourth Proportional to 123,549.20, 185,323.80 and 113,926.40

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Solution

The fourth proportional to 123,549.20, 185,323.80 and 113,926.40 is: 170,889.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,549.20 : 185,323.80 = 113,926.40 : x
  2. Step 2: Convert to fraction form
    123,549.20/185,323.80 = 113,926.40/x
  3. Step 3: Cross multiply
    123,549.20x = 185,323.80 × 113,926.40
  4. Step 4: Simplify right side
    123,549.20x = 21,113,273,368.32
  5. Step 5: Solve for x
    x = 21,113,273,368.32/123,549.20
  6. Step 6: Final answer
    x = 170,889.60

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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.