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Finding the Fourth Proportional to 115,500.40, 173,359.95 and 98,879.20

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Solution

The fourth proportional to 115,500.40, 173,359.95 and 98,879.20 is: 148,412.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,500.40 : 173,359.95 = 98,879.20 : x
  2. Step 2: Convert to fraction form
    115,500.40/173,359.95 = 98,879.20/x
  3. Step 3: Cross multiply
    115,500.40x = 173,359.95 × 98,879.20
  4. Step 4: Simplify right side
    115,500.40x = 17,141,693,168.04
  5. Step 5: Solve for x
    x = 17,141,693,168.04/115,500.40
  6. Step 6: Final answer
    x = 148,412.41

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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.