Home / 121,041.40-181,562.10-42,129.40

Finding the Fourth Proportional to 121,041.40, 181,562.10 and 42,129.40

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Solution

The fourth proportional to 121,041.40, 181,562.10 and 42,129.40 is: 63,194.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,041.40 : 181,562.10 = 42,129.40 : x
  2. Step 2: Convert to fraction form
    121,041.40/181,562.10 = 42,129.40/x
  3. Step 3: Cross multiply
    121,041.40x = 181,562.10 × 42,129.40
  4. Step 4: Simplify right side
    121,041.40x = 7,649,102,335.74
  5. Step 5: Solve for x
    x = 7,649,102,335.74/121,041.40
  6. Step 6: Final answer
    x = 63,194.10

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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.