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Finding the Fourth Proportional to 124,488.77, 171,809.03 and 70,781.84

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Solution

The fourth proportional to 124,488.77, 171,809.03 and 70,781.84 is: 97,687.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,488.77 : 171,809.03 = 70,781.84 : x
  2. Step 2: Convert to fraction form
    124,488.77/171,809.03 = 70,781.84/x
  3. Step 3: Cross multiply
    124,488.77x = 171,809.03 × 70,781.84
  4. Step 4: Simplify right side
    124,488.77x = 12,160,958,059.06
  5. Step 5: Solve for x
    x = 12,160,958,059.06/124,488.77
  6. Step 6: Final answer
    x = 97,687.19

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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.