Home / 115,276.10-172,929.26-45,146.30

Finding the Fourth Proportional to 115,276.10, 172,929.26 and 45,146.30

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Solution

The fourth proportional to 115,276.10, 172,929.26 and 45,146.30 is: 67,725.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,276.10 : 172,929.26 = 45,146.30 : x
  2. Step 2: Convert to fraction form
    115,276.10/172,929.26 = 45,146.30/x
  3. Step 3: Cross multiply
    115,276.10x = 172,929.26 × 45,146.30
  4. Step 4: Simplify right side
    115,276.10x = 7,807,115,498.96
  5. Step 5: Solve for x
    x = 7,807,115,498.96/115,276.10
  6. Step 6: Final answer
    x = 67,725.36

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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.