Home / 90,630.18-125,019.27-84,215.54

Finding the Fourth Proportional to 90,630.18, 125,019.27 and 84,215.54

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Solution

The fourth proportional to 90,630.18, 125,019.27 and 84,215.54 is: 116,170.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,630.18 : 125,019.27 = 84,215.54 : x
  2. Step 2: Convert to fraction form
    90,630.18/125,019.27 = 84,215.54/x
  3. Step 3: Cross multiply
    90,630.18x = 125,019.27 × 84,215.54
  4. Step 4: Simplify right side
    90,630.18x = 10,528,565,646.00
  5. Step 5: Solve for x
    x = 10,528,565,646.00/90,630.18
  6. Step 6: Final answer
    x = 116,170.64

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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.