Home / 102,345.85-141,247.67-57,031.21

Finding the Fourth Proportional to 102,345.85, 141,247.67 and 57,031.21

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Solution

The fourth proportional to 102,345.85, 141,247.67 and 57,031.21 is: 78,708.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,345.85 : 141,247.67 = 57,031.21 : x
  2. Step 2: Convert to fraction form
    102,345.85/141,247.67 = 57,031.21/x
  3. Step 3: Cross multiply
    102,345.85x = 141,247.67 × 57,031.21
  4. Step 4: Simplify right side
    102,345.85x = 8,055,525,529.78
  5. Step 5: Solve for x
    x = 8,055,525,529.78/102,345.85
  6. Step 6: Final answer
    x = 78,708.86

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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.