Home / 121,355.36-182,115.04-42,470.28

Finding the Fourth Proportional to 121,355.36, 182,115.04 and 42,470.28

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Solution

The fourth proportional to 121,355.36, 182,115.04 and 42,470.28 is: 63,734.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,355.36 : 182,115.04 = 42,470.28 : x
  2. Step 2: Convert to fraction form
    121,355.36/182,115.04 = 42,470.28/x
  3. Step 3: Cross multiply
    121,355.36x = 182,115.04 × 42,470.28
  4. Step 4: Simplify right side
    121,355.36x = 7,734,476,741.01
  5. Step 5: Solve for x
    x = 7,734,476,741.01/121,355.36
  6. Step 6: Final answer
    x = 63,734.12

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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.