Home / 127,790.85-176,381.43-79,429.31

Finding the Fourth Proportional to 127,790.85, 176,381.43 and 79,429.31

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Solution

The fourth proportional to 127,790.85, 176,381.43 and 79,429.31 is: 109,631.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,790.85 : 176,381.43 = 79,429.31 : x
  2. Step 2: Convert to fraction form
    127,790.85/176,381.43 = 79,429.31/x
  3. Step 3: Cross multiply
    127,790.85x = 176,381.43 × 79,429.31
  4. Step 4: Simplify right side
    127,790.85x = 14,009,854,002.66
  5. Step 5: Solve for x
    x = 14,009,854,002.66/127,790.85
  6. Step 6: Final answer
    x = 109,631.12

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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.