Home / 88,178.32-121,769.10-61,394.08

Finding the Fourth Proportional to 88,178.32, 121,769.10 and 61,394.08

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Solution

The fourth proportional to 88,178.32, 121,769.10 and 61,394.08 is: 84,781.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,178.32 : 121,769.10 = 61,394.08 : x
  2. Step 2: Convert to fraction form
    88,178.32/121,769.10 = 61,394.08/x
  3. Step 3: Cross multiply
    88,178.32x = 121,769.10 × 61,394.08
  4. Step 4: Simplify right side
    88,178.32x = 7,475,901,866.93
  5. Step 5: Solve for x
    x = 7,475,901,866.93/88,178.32
  6. Step 6: Final answer
    x = 84,781.63

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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.