Home / 130,029.40-179,440.65-72,671.07

Finding the Fourth Proportional to 130,029.40, 179,440.65 and 72,671.07

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Solution

The fourth proportional to 130,029.40, 179,440.65 and 72,671.07 is: 100,286.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,029.40 : 179,440.65 = 72,671.07 : x
  2. Step 2: Convert to fraction form
    130,029.40/179,440.65 = 72,671.07/x
  3. Step 3: Cross multiply
    130,029.40x = 179,440.65 × 72,671.07
  4. Step 4: Simplify right side
    130,029.40x = 13,040,144,709.90
  5. Step 5: Solve for x
    x = 13,040,144,709.90/130,029.40
  6. Step 6: Final answer
    x = 100,286.12

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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.