Home / 115,439.40-173,123.10-45,340.20

Finding the Fourth Proportional to 115,439.40, 173,123.10 and 45,340.20

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Solution

The fourth proportional to 115,439.40, 173,123.10 and 45,340.20 is: 67,996.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,439.40 : 173,123.10 = 45,340.20 : x
  2. Step 2: Convert to fraction form
    115,439.40/173,123.10 = 45,340.20/x
  3. Step 3: Cross multiply
    115,439.40x = 173,123.10 × 45,340.20
  4. Step 4: Simplify right side
    115,439.40x = 7,849,435,978.62
  5. Step 5: Solve for x
    x = 7,849,435,978.62/115,439.40
  6. Step 6: Final answer
    x = 67,996.16

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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.