Home / 130,031.76-179,441.28-72,671.61

Finding the Fourth Proportional to 130,031.76, 179,441.28 and 72,671.61

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Solution

The fourth proportional to 130,031.76, 179,441.28 and 72,671.61 is: 100,285.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,031.76 : 179,441.28 = 72,671.61 : x
  2. Step 2: Convert to fraction form
    130,031.76/179,441.28 = 72,671.61/x
  3. Step 3: Cross multiply
    130,031.76x = 179,441.28 × 72,671.61
  4. Step 4: Simplify right side
    130,031.76x = 13,040,286,718.06
  5. Step 5: Solve for x
    x = 13,040,286,718.06/130,031.76
  6. Step 6: Final answer
    x = 100,285.40

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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.