Home / 130,111.53-179,543.90-79,117.26

Finding the Fourth Proportional to 130,111.53, 179,543.90 and 79,117.26

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Solution

The fourth proportional to 130,111.53, 179,543.90 and 79,117.26 is: 109,175.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,111.53 : 179,543.90 = 79,117.26 : x
  2. Step 2: Convert to fraction form
    130,111.53/179,543.90 = 79,117.26/x
  3. Step 3: Cross multiply
    130,111.53x = 179,543.90 × 79,117.26
  4. Step 4: Simplify right side
    130,111.53x = 14,205,021,022.13
  5. Step 5: Solve for x
    x = 14,205,021,022.13/130,111.53
  6. Step 6: Final answer
    x = 109,175.73

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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.