Home / 124,679.50-172,114.35-79,419.53

Finding the Fourth Proportional to 124,679.50, 172,114.35 and 79,419.53

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Solution

The fourth proportional to 124,679.50, 172,114.35 and 79,419.53 is: 109,635.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,679.50 : 172,114.35 = 79,419.53 : x
  2. Step 2: Convert to fraction form
    124,679.50/172,114.35 = 79,419.53/x
  3. Step 3: Cross multiply
    124,679.50x = 172,114.35 × 79,419.53
  4. Step 4: Simplify right side
    124,679.50x = 13,669,240,783.26
  5. Step 5: Solve for x
    x = 13,669,240,783.26/124,679.50
  6. Step 6: Final answer
    x = 109,635.03

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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.