Home / 124,776.84-172,209.60-79,440.34

Finding the Fourth Proportional to 124,776.84, 172,209.60 and 79,440.34

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Solution

The fourth proportional to 124,776.84, 172,209.60 and 79,440.34 is: 109,638.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,776.84 : 172,209.60 = 79,440.34 : x
  2. Step 2: Convert to fraction form
    124,776.84/172,209.60 = 79,440.34/x
  3. Step 3: Cross multiply
    124,776.84x = 172,209.60 × 79,440.34
  4. Step 4: Simplify right side
    124,776.84x = 13,680,389,175.26
  5. Step 5: Solve for x
    x = 13,680,389,175.26/124,776.84
  6. Step 6: Final answer
    x = 109,638.85

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1.5x scale

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.