Home / 121,478.10-182,217.15-42,600.30

Finding the Fourth Proportional to 121,478.10, 182,217.15 and 42,600.30

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Solution

The fourth proportional to 121,478.10, 182,217.15 and 42,600.30 is: 63,900.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,478.10 : 182,217.15 = 42,600.30 : x
  2. Step 2: Convert to fraction form
    121,478.10/182,217.15 = 42,600.30/x
  3. Step 3: Cross multiply
    121,478.10x = 182,217.15 × 42,600.30
  4. Step 4: Simplify right side
    121,478.10x = 7,762,505,255.15
  5. Step 5: Solve for x
    x = 7,762,505,255.15/121,478.10
  6. Step 6: Final answer
    x = 63,900.45

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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.