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Finding the Fourth Proportional to 124,805.18, 172,230.90 and 71,090.18

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Solution

The fourth proportional to 124,805.18, 172,230.90 and 71,090.18 is: 98,104.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,805.18 : 172,230.90 = 71,090.18 : x
  2. Step 2: Convert to fraction form
    124,805.18/172,230.90 = 71,090.18/x
  3. Step 3: Cross multiply
    124,805.18x = 172,230.90 × 71,090.18
  4. Step 4: Simplify right side
    124,805.18x = 12,243,925,682.56
  5. Step 5: Solve for x
    x = 12,243,925,682.56/124,805.18
  6. Step 6: Final answer
    x = 98,104.31

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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.