Home / 124,228.64-171,431.16-67,638.80

Finding the Fourth Proportional to 124,228.64, 171,431.16 and 67,638.80

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Solution

The fourth proportional to 124,228.64, 171,431.16 and 67,638.80 is: 93,339.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,228.64 : 171,431.16 = 67,638.80 : x
  2. Step 2: Convert to fraction form
    124,228.64/171,431.16 = 67,638.80/x
  3. Step 3: Cross multiply
    124,228.64x = 171,431.16 × 67,638.80
  4. Step 4: Simplify right side
    124,228.64x = 11,595,397,945.01
  5. Step 5: Solve for x
    x = 11,595,397,945.01/124,228.64
  6. Step 6: Final answer
    x = 93,339.17

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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.