Home / 130,863.44-180,587-79,961.38

Finding the Fourth Proportional to 130,863.44, 180,587 and 79,961.38

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Solution

The fourth proportional to 130,863.44, 180,587 and 79,961.38 is: 110,343.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,863.44 : 180,587 = 79,961.38 : x
  2. Step 2: Convert to fraction form
    130,863.44/180,587 = 79,961.38/x
  3. Step 3: Cross multiply
    130,863.44x = 180,587 × 79,961.38
  4. Step 4: Simplify right side
    130,863.44x = 14,439,985,730.06
  5. Step 5: Solve for x
    x = 14,439,985,730.06/130,863.44
  6. Step 6: Final answer
    x = 110,343.93

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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.