Home / 90,065.09-124,225.36-63,213.59

Finding the Fourth Proportional to 90,065.09, 124,225.36 and 63,213.59

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Solution

The fourth proportional to 90,065.09, 124,225.36 and 63,213.59 is: 87,189.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,065.09 : 124,225.36 = 63,213.59 : x
  2. Step 2: Convert to fraction form
    90,065.09/124,225.36 = 63,213.59/x
  3. Step 3: Cross multiply
    90,065.09x = 124,225.36 × 63,213.59
  4. Step 4: Simplify right side
    90,065.09x = 7,852,730,195.48
  5. Step 5: Solve for x
    x = 7,852,730,195.48/90,065.09
  6. Step 6: Final answer
    x = 87,189.51

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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.