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Finding the Fourth Proportional to 123,595.74, 170,570.86 and 69,881.28

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Solution

The fourth proportional to 123,595.74, 170,570.86 and 69,881.28 is: 96,441.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,595.74 : 170,570.86 = 69,881.28 : x
  2. Step 2: Convert to fraction form
    123,595.74/170,570.86 = 69,881.28/x
  3. Step 3: Cross multiply
    123,595.74x = 170,570.86 × 69,881.28
  4. Step 4: Simplify right side
    123,595.74x = 11,919,710,027.50
  5. Step 5: Solve for x
    x = 11,919,710,027.50/123,595.74
  6. Step 6: Final answer
    x = 96,441.11

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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.