Home / 130,307.52-179,713.38-100,165.80

Finding the Fourth Proportional to 130,307.52, 179,713.38 and 100,165.80

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Solution

The fourth proportional to 130,307.52, 179,713.38 and 100,165.80 is: 138,143.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,307.52 : 179,713.38 = 100,165.80 : x
  2. Step 2: Convert to fraction form
    130,307.52/179,713.38 = 100,165.80/x
  3. Step 3: Cross multiply
    130,307.52x = 179,713.38 × 100,165.80
  4. Step 4: Simplify right side
    130,307.52x = 18,001,134,478.40
  5. Step 5: Solve for x
    x = 18,001,134,478.40/130,307.52
  6. Step 6: Final answer
    x = 138,143.48

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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.