Home / 90,021.85-124,265.15-80,574.01

Finding the Fourth Proportional to 90,021.85, 124,265.15 and 80,574.01

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Solution

The fourth proportional to 90,021.85, 124,265.15 and 80,574.01 is: 111,223.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,021.85 : 124,265.15 = 80,574.01 : x
  2. Step 2: Convert to fraction form
    90,021.85/124,265.15 = 80,574.01/x
  3. Step 3: Cross multiply
    90,021.85x = 124,265.15 × 80,574.01
  4. Step 4: Simplify right side
    90,021.85x = 10,012,541,438.75
  5. Step 5: Solve for x
    x = 10,012,541,438.75/90,021.85
  6. Step 6: Final answer
    x = 111,223.46

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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.