Home / 121,281.60-181,844.64-51,142.08

Finding the Fourth Proportional to 121,281.60, 181,844.64 and 51,142.08

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Solution

The fourth proportional to 121,281.60, 181,844.64 and 51,142.08 is: 76,680.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,281.60 : 181,844.64 = 51,142.08 : x
  2. Step 2: Convert to fraction form
    121,281.60/181,844.64 = 51,142.08/x
  3. Step 3: Cross multiply
    121,281.60x = 181,844.64 × 51,142.08
  4. Step 4: Simplify right side
    121,281.60x = 9,299,913,126.45
  5. Step 5: Solve for x
    x = 9,299,913,126.45/121,281.60
  6. Step 6: Final answer
    x = 76,680.33

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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.