Home / 88,189.16-121,634.36-61,318.20

Finding the Fourth Proportional to 88,189.16, 121,634.36 and 61,318.20

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Solution

The fourth proportional to 88,189.16, 121,634.36 and 61,318.20 is: 84,572.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,189.16 : 121,634.36 = 61,318.20 : x
  2. Step 2: Convert to fraction form
    88,189.16/121,634.36 = 61,318.20/x
  3. Step 3: Cross multiply
    88,189.16x = 121,634.36 × 61,318.20
  4. Step 4: Simplify right side
    88,189.16x = 7,458,400,013.35
  5. Step 5: Solve for x
    x = 7,458,400,013.35/88,189.16
  6. Step 6: Final answer
    x = 84,572.75

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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.