Home / 95,038.30-143,211.13-78,764.59

Finding the Fourth Proportional to 95,038.30, 143,211.13 and 78,764.59

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Solution

The fourth proportional to 95,038.30, 143,211.13 and 78,764.59 is: 118,688.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,038.30 : 143,211.13 = 78,764.59 : x
  2. Step 2: Convert to fraction form
    95,038.30/143,211.13 = 78,764.59/x
  3. Step 3: Cross multiply
    95,038.30x = 143,211.13 × 78,764.59
  4. Step 4: Simplify right side
    95,038.30x = 11,279,965,937.89
  5. Step 5: Solve for x
    x = 11,279,965,937.89/95,038.30
  6. Step 6: Final answer
    x = 118,688.63

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.