Home / 121,167.40-181,805.10-42,338.20

Finding the Fourth Proportional to 121,167.40, 181,805.10 and 42,338.20

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Solution

The fourth proportional to 121,167.40, 181,805.10 and 42,338.20 is: 63,526.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,167.40 : 181,805.10 = 42,338.20 : x
  2. Step 2: Convert to fraction form
    121,167.40/181,805.10 = 42,338.20/x
  3. Step 3: Cross multiply
    121,167.40x = 181,805.10 × 42,338.20
  4. Step 4: Simplify right side
    121,167.40x = 7,697,300,684.82
  5. Step 5: Solve for x
    x = 7,697,300,684.82/121,167.40
  6. Step 6: Final answer
    x = 63,526.17

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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.