Home / 130,944.78-180,699-80,042.76

Finding the Fourth Proportional to 130,944.78, 180,699 and 80,042.76

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Solution

The fourth proportional to 130,944.78, 180,699 and 80,042.76 is: 110,456.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,944.78 : 180,699 = 80,042.76 : x
  2. Step 2: Convert to fraction form
    130,944.78/180,699 = 80,042.76/x
  3. Step 3: Cross multiply
    130,944.78x = 180,699 × 80,042.76
  4. Step 4: Simplify right side
    130,944.78x = 14,463,646,689.24
  5. Step 5: Solve for x
    x = 14,463,646,689.24/130,944.78
  6. Step 6: Final answer
    x = 110,456.08

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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.