Home / 129,216.02-178,278.03-75,462.26

Finding the Fourth Proportional to 129,216.02, 178,278.03 and 75,462.26

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Solution

The fourth proportional to 129,216.02, 178,278.03 and 75,462.26 is: 104,114.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,216.02 : 178,278.03 = 75,462.26 : x
  2. Step 2: Convert to fraction form
    129,216.02/178,278.03 = 75,462.26/x
  3. Step 3: Cross multiply
    129,216.02x = 178,278.03 × 75,462.26
  4. Step 4: Simplify right side
    129,216.02x = 13,453,262,160.76
  5. Step 5: Solve for x
    x = 13,453,262,160.76/129,216.02
  6. Step 6: Final answer
    x = 104,114.51

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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.