Home / 121,030.20-181,545.30-87,593.40

Finding the Fourth Proportional to 121,030.20, 181,545.30 and 87,593.40

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Solution

The fourth proportional to 121,030.20, 181,545.30 and 87,593.40 is: 131,390.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,030.20 : 181,545.30 = 87,593.40 : x
  2. Step 2: Convert to fraction form
    121,030.20/181,545.30 = 87,593.40/x
  3. Step 3: Cross multiply
    121,030.20x = 181,545.30 × 87,593.40
  4. Step 4: Simplify right side
    121,030.20x = 15,902,170,081.02
  5. Step 5: Solve for x
    x = 15,902,170,081.02/121,030.20
  6. Step 6: Final answer
    x = 131,390.10

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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.