Home / 121,148.76-181,671.30-42,239.64

Finding the Fourth Proportional to 121,148.76, 181,671.30 and 42,239.64

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Solution

The fourth proportional to 121,148.76, 181,671.30 and 42,239.64 is: 63,341.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,148.76 : 181,671.30 = 42,239.64 : x
  2. Step 2: Convert to fraction form
    121,148.76/181,671.30 = 42,239.64/x
  3. Step 3: Cross multiply
    121,148.76x = 181,671.30 × 42,239.64
  4. Step 4: Simplify right side
    121,148.76x = 7,673,730,310.33
  5. Step 5: Solve for x
    x = 7,673,730,310.33/121,148.76
  6. Step 6: Final answer
    x = 63,341.39

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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.