Home / 121,041.60-181,562.40-42,163.80

Finding the Fourth Proportional to 121,041.60, 181,562.40 and 42,163.80

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Solution

The fourth proportional to 121,041.60, 181,562.40 and 42,163.80 is: 63,245.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,041.60 : 181,562.40 = 42,163.80 : x
  2. Step 2: Convert to fraction form
    121,041.60/181,562.40 = 42,163.80/x
  3. Step 3: Cross multiply
    121,041.60x = 181,562.40 × 42,163.80
  4. Step 4: Simplify right side
    121,041.60x = 7,655,360,721.12
  5. Step 5: Solve for x
    x = 7,655,360,721.12/121,041.60
  6. Step 6: Final answer
    x = 63,245.70

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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.