Home / 121,330.65-181,995.98-100,335.45

Finding the Fourth Proportional to 121,330.65, 181,995.98 and 100,335.45

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Solution

The fourth proportional to 121,330.65, 181,995.98 and 100,335.45 is: 150,503.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,330.65 : 181,995.98 = 100,335.45 : x
  2. Step 2: Convert to fraction form
    121,330.65/181,995.98 = 100,335.45/x
  3. Step 3: Cross multiply
    121,330.65x = 181,995.98 × 100,335.45
  4. Step 4: Simplify right side
    121,330.65x = 18,260,648,049.81
  5. Step 5: Solve for x
    x = 18,260,648,049.81/121,330.65
  6. Step 6: Final answer
    x = 150,503.18

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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.