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Finding the Fourth Proportional to 123,655.10, 185,482.65 and 84,289.10

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Solution

The fourth proportional to 123,655.10, 185,482.65 and 84,289.10 is: 126,433.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,655.10 : 185,482.65 = 84,289.10 : x
  2. Step 2: Convert to fraction form
    123,655.10/185,482.65 = 84,289.10/x
  3. Step 3: Cross multiply
    123,655.10x = 185,482.65 × 84,289.10
  4. Step 4: Simplify right side
    123,655.10x = 15,634,165,634.12
  5. Step 5: Solve for x
    x = 15,634,165,634.12/123,655.10
  6. Step 6: Final answer
    x = 126,433.65

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Similar ratio
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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.