Home / 101,868.10-140,575.80-56,543.44

Finding the Fourth Proportional to 101,868.10, 140,575.80 and 56,543.44

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Solution

The fourth proportional to 101,868.10, 140,575.80 and 56,543.44 is: 78,028.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,868.10 : 140,575.80 = 56,543.44 : x
  2. Step 2: Convert to fraction form
    101,868.10/140,575.80 = 56,543.44/x
  3. Step 3: Cross multiply
    101,868.10x = 140,575.80 × 56,543.44
  4. Step 4: Simplify right side
    101,868.10x = 7,948,639,312.75
  5. Step 5: Solve for x
    x = 7,948,639,312.75/101,868.10
  6. Step 6: Final answer
    x = 78,028.74

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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.