Home / 121,029.60-181,501.20-42,146.40

Finding the Fourth Proportional to 121,029.60, 181,501.20 and 42,146.40

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Solution

The fourth proportional to 121,029.60, 181,501.20 and 42,146.40 is: 63,204.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,029.60 : 181,501.20 = 42,146.40 : x
  2. Step 2: Convert to fraction form
    121,029.60/181,501.20 = 42,146.40/x
  3. Step 3: Cross multiply
    121,029.60x = 181,501.20 × 42,146.40
  4. Step 4: Simplify right side
    121,029.60x = 7,649,622,175.68
  5. Step 5: Solve for x
    x = 7,649,622,175.68/121,029.60
  6. Step 6: Final answer
    x = 63,204.56

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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.