Home / 85,170.04-127,842.24-70,331.68

Finding the Fourth Proportional to 85,170.04, 127,842.24 and 70,331.68

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Solution

The fourth proportional to 85,170.04, 127,842.24 and 70,331.68 is: 105,569.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,170.04 : 127,842.24 = 70,331.68 : x
  2. Step 2: Convert to fraction form
    85,170.04/127,842.24 = 70,331.68/x
  3. Step 3: Cross multiply
    85,170.04x = 127,842.24 × 70,331.68
  4. Step 4: Simplify right side
    85,170.04x = 8,991,359,514.16
  5. Step 5: Solve for x
    x = 8,991,359,514.16/85,170.04
  6. Step 6: Final answer
    x = 105,569.51

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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.