Home / 108,278.66-162,417.99-45,128.53

Finding the Fourth Proportional to 108,278.66, 162,417.99 and 45,128.53

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Solution

The fourth proportional to 108,278.66, 162,417.99 and 45,128.53 is: 67,692.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,278.66 : 162,417.99 = 45,128.53 : x
  2. Step 2: Convert to fraction form
    108,278.66/162,417.99 = 45,128.53/x
  3. Step 3: Cross multiply
    108,278.66x = 162,417.99 × 45,128.53
  4. Step 4: Simplify right side
    108,278.66x = 7,329,684,096.52
  5. Step 5: Solve for x
    x = 7,329,684,096.52/108,278.66
  6. Step 6: Final answer
    x = 67,692.79

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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.