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Finding the Fourth Proportional to 124,435.20, 171,735.14 and 70,728.28

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Solution

The fourth proportional to 124,435.20, 171,735.14 and 70,728.28 is: 97,613.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,435.20 : 171,735.14 = 70,728.28 : x
  2. Step 2: Convert to fraction form
    124,435.20/171,735.14 = 70,728.28/x
  3. Step 3: Cross multiply
    124,435.20x = 171,735.14 × 70,728.28
  4. Step 4: Simplify right side
    124,435.20x = 12,146,531,067.76
  5. Step 5: Solve for x
    x = 12,146,531,067.76/124,435.20
  6. Step 6: Final answer
    x = 97,613.30

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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.