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Finding the Fourth Proportional to 207,648.61, 286,555.25 and 112,155.39

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Solution

The fourth proportional to 207,648.61, 286,555.25 and 112,155.39 is: 154,774.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,648.61 : 286,555.25 = 112,155.39 : x
  2. Step 2: Convert to fraction form
    207,648.61/286,555.25 = 112,155.39/x
  3. Step 3: Cross multiply
    207,648.61x = 286,555.25 × 112,155.39
  4. Step 4: Simplify right side
    207,648.61x = 32,138,716,100.69
  5. Step 5: Solve for x
    x = 32,138,716,100.69/207,648.61
  6. Step 6: Final answer
    x = 154,774.53

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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.