Home / 129,000.36-193,509.45-54,045.20

Finding the Fourth Proportional to 129,000.36, 193,509.45 and 54,045.20

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Solution

The fourth proportional to 129,000.36, 193,509.45 and 54,045.20 is: 81,071.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,000.36 : 193,509.45 = 54,045.20 : x
  2. Step 2: Convert to fraction form
    129,000.36/193,509.45 = 54,045.20/x
  3. Step 3: Cross multiply
    129,000.36x = 193,509.45 × 54,045.20
  4. Step 4: Simplify right side
    129,000.36x = 10,458,255,959.59
  5. Step 5: Solve for x
    x = 10,458,255,959.59/129,000.36
  6. Step 6: Final answer
    x = 81,071.53

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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.