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Finding the Fourth Proportional to 124,458.50, 171,765.69 and 76,710.62

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Solution

The fourth proportional to 124,458.50, 171,765.69 and 76,710.62 is: 105,868.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,458.50 : 171,765.69 = 76,710.62 : x
  2. Step 2: Convert to fraction form
    124,458.50/171,765.69 = 76,710.62/x
  3. Step 3: Cross multiply
    124,458.50x = 171,765.69 × 76,710.62
  4. Step 4: Simplify right side
    124,458.50x = 13,176,252,574.63
  5. Step 5: Solve for x
    x = 13,176,252,574.63/124,458.50
  6. Step 6: Final answer
    x = 105,868.64

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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.