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Finding the Fourth Proportional to 115,879.60, 173,689.80 and 65,983.60

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Solution

The fourth proportional to 115,879.60, 173,689.80 and 65,983.60 is: 98,901.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,879.60 : 173,689.80 = 65,983.60 : x
  2. Step 2: Convert to fraction form
    115,879.60/173,689.80 = 65,983.60/x
  3. Step 3: Cross multiply
    115,879.60x = 173,689.80 × 65,983.60
  4. Step 4: Simplify right side
    115,879.60x = 11,460,678,287.28
  5. Step 5: Solve for x
    x = 11,460,678,287.28/115,879.60
  6. Step 6: Final answer
    x = 98,901.60

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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.