Home / 121,013.10-181,519.65-74,292.30

Finding the Fourth Proportional to 121,013.10, 181,519.65 and 74,292.30

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Solution

The fourth proportional to 121,013.10, 181,519.65 and 74,292.30 is: 111,438.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,013.10 : 181,519.65 = 74,292.30 : x
  2. Step 2: Convert to fraction form
    121,013.10/181,519.65 = 74,292.30/x
  3. Step 3: Cross multiply
    121,013.10x = 181,519.65 × 74,292.30
  4. Step 4: Simplify right side
    121,013.10x = 13,485,512,293.70
  5. Step 5: Solve for x
    x = 13,485,512,293.70/121,013.10
  6. Step 6: Final answer
    x = 111,438.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.