Home / 94,151.12-129,928.61-51,129.78

Finding the Fourth Proportional to 94,151.12, 129,928.61 and 51,129.78

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Solution

The fourth proportional to 94,151.12, 129,928.61 and 51,129.78 is: 70,559.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,151.12 : 129,928.61 = 51,129.78 : x
  2. Step 2: Convert to fraction form
    94,151.12/129,928.61 = 51,129.78/x
  3. Step 3: Cross multiply
    94,151.12x = 129,928.61 × 51,129.78
  4. Step 4: Simplify right side
    94,151.12x = 6,643,220,989.36
  5. Step 5: Solve for x
    x = 6,643,220,989.36/94,151.12
  6. Step 6: Final answer
    x = 70,559.13

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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.