Home / 88,139.59-121,634.69-52,329.70

Finding the Fourth Proportional to 88,139.59, 121,634.69 and 52,329.70

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Solution

The fourth proportional to 88,139.59, 121,634.69 and 52,329.70 is: 72,216.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,139.59 : 121,634.69 = 52,329.70 : x
  2. Step 2: Convert to fraction form
    88,139.59/121,634.69 = 52,329.70/x
  3. Step 3: Cross multiply
    88,139.59x = 121,634.69 × 52,329.70
  4. Step 4: Simplify right side
    88,139.59x = 6,365,106,190.67
  5. Step 5: Solve for x
    x = 6,365,106,190.67/88,139.59
  6. Step 6: Final answer
    x = 72,216.20

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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.