Home / 129,041.10-178,045.56-75,295.44

Finding the Fourth Proportional to 129,041.10, 178,045.56 and 75,295.44

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Solution

The fourth proportional to 129,041.10, 178,045.56 and 75,295.44 is: 103,889.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,041.10 : 178,045.56 = 75,295.44 : x
  2. Step 2: Convert to fraction form
    129,041.10/178,045.56 = 75,295.44/x
  3. Step 3: Cross multiply
    129,041.10x = 178,045.56 × 75,295.44
  4. Step 4: Simplify right side
    129,041.10x = 13,406,018,780.25
  5. Step 5: Solve for x
    x = 13,406,018,780.25/129,041.10
  6. Step 6: Final answer
    x = 103,889.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.