Home / 102,399.66-141,282.09-66,642.30

Finding the Fourth Proportional to 102,399.66, 141,282.09 and 66,642.30

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Solution

The fourth proportional to 102,399.66, 141,282.09 and 66,642.30 is: 91,947.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,399.66 : 141,282.09 = 66,642.30 : x
  2. Step 2: Convert to fraction form
    102,399.66/141,282.09 = 66,642.30/x
  3. Step 3: Cross multiply
    102,399.66x = 141,282.09 × 66,642.30
  4. Step 4: Simplify right side
    102,399.66x = 9,415,363,426.41
  5. Step 5: Solve for x
    x = 9,415,363,426.41/102,399.66
  6. Step 6: Final answer
    x = 91,947.21

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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.