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Finding the Fourth Proportional to 115,252.80, 172,879.20 and 108,254.40

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Solution

The fourth proportional to 115,252.80, 172,879.20 and 108,254.40 is: 162,381.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,252.80 : 172,879.20 = 108,254.40 : x
  2. Step 2: Convert to fraction form
    115,252.80/172,879.20 = 108,254.40/x
  3. Step 3: Cross multiply
    115,252.80x = 172,879.20 × 108,254.40
  4. Step 4: Simplify right side
    115,252.80x = 18,714,934,068.48
  5. Step 5: Solve for x
    x = 18,714,934,068.48/115,252.80
  6. Step 6: Final answer
    x = 162,381.60

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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.