Home / 124,855.20-172,289.16-71,138.16

Finding the Fourth Proportional to 124,855.20, 172,289.16 and 71,138.16

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Solution

The fourth proportional to 124,855.20, 172,289.16 and 71,138.16 is: 98,164.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,855.20 : 172,289.16 = 71,138.16 : x
  2. Step 2: Convert to fraction form
    124,855.20/172,289.16 = 71,138.16/x
  3. Step 3: Cross multiply
    124,855.20x = 172,289.16 × 71,138.16
  4. Step 4: Simplify right side
    124,855.20x = 12,256,333,830.35
  5. Step 5: Solve for x
    x = 12,256,333,830.35/124,855.20
  6. Step 6: Final answer
    x = 98,164.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.