Home / 88,131.20-121,575.98-56,266.60

Finding the Fourth Proportional to 88,131.20, 121,575.98 and 56,266.60

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Solution

The fourth proportional to 88,131.20, 121,575.98 and 56,266.60 is: 77,619.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,131.20 : 121,575.98 = 56,266.60 : x
  2. Step 2: Convert to fraction form
    88,131.20/121,575.98 = 56,266.60/x
  3. Step 3: Cross multiply
    88,131.20x = 121,575.98 × 56,266.60
  4. Step 4: Simplify right side
    88,131.20x = 6,840,667,036.27
  5. Step 5: Solve for x
    x = 6,840,667,036.27/88,131.20
  6. Step 6: Final answer
    x = 77,619.13

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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.