Home / 103,040.10-142,200.69-57,715.44

Finding the Fourth Proportional to 103,040.10, 142,200.69 and 57,715.44

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Solution

The fourth proportional to 103,040.10, 142,200.69 and 57,715.44 is: 79,650.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,040.10 : 142,200.69 = 57,715.44 : x
  2. Step 2: Convert to fraction form
    103,040.10/142,200.69 = 57,715.44/x
  3. Step 3: Cross multiply
    103,040.10x = 142,200.69 × 57,715.44
  4. Step 4: Simplify right side
    103,040.10x = 8,207,175,391.65
  5. Step 5: Solve for x
    x = 8,207,175,391.65/103,040.10
  6. Step 6: Final answer
    x = 79,650.30

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1.5x scale

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.