Home / 145,458.78-200,731.86-81,795.22

Finding the Fourth Proportional to 145,458.78, 200,731.86 and 81,795.22

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Solution

The fourth proportional to 145,458.78, 200,731.86 and 81,795.22 is: 112,876.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,458.78 : 200,731.86 = 81,795.22 : x
  2. Step 2: Convert to fraction form
    145,458.78/200,731.86 = 81,795.22/x
  3. Step 3: Cross multiply
    145,458.78x = 200,731.86 × 81,795.22
  4. Step 4: Simplify right side
    145,458.78x = 16,418,906,649.71
  5. Step 5: Solve for x
    x = 16,418,906,649.71/145,458.78
  6. Step 6: Final answer
    x = 112,876.70

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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.