Home / 142,876.08-197,175.39-81,627.63

Finding the Fourth Proportional to 142,876.08, 197,175.39 and 81,627.63

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Solution

The fourth proportional to 142,876.08, 197,175.39 and 81,627.63 is: 112,649.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,876.08 : 197,175.39 = 81,627.63 : x
  2. Step 2: Convert to fraction form
    142,876.08/197,175.39 = 81,627.63/x
  3. Step 3: Cross multiply
    142,876.08x = 197,175.39 × 81,627.63
  4. Step 4: Simplify right side
    142,876.08x = 16,094,958,386.01
  5. Step 5: Solve for x
    x = 16,094,958,386.01/142,876.08
  6. Step 6: Final answer
    x = 112,649.78

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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.