Home / 80,561.16-111,129.61-74,859.26

Finding the Fourth Proportional to 80,561.16, 111,129.61 and 74,859.26

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Solution

The fourth proportional to 80,561.16, 111,129.61 and 74,859.26 is: 103,264.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,561.16 : 111,129.61 = 74,859.26 : x
  2. Step 2: Convert to fraction form
    80,561.16/111,129.61 = 74,859.26/x
  3. Step 3: Cross multiply
    80,561.16x = 111,129.61 × 74,859.26
  4. Step 4: Simplify right side
    80,561.16x = 8,319,080,368.69
  5. Step 5: Solve for x
    x = 8,319,080,368.69/80,561.16
  6. Step 6: Final answer
    x = 103,264.16

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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.