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Finding the Fourth Proportional to 124,095.97, 171,311.93 and 76,390.21

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Solution

The fourth proportional to 124,095.97, 171,311.93 and 76,390.21 is: 105,455.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,095.97 : 171,311.93 = 76,390.21 : x
  2. Step 2: Convert to fraction form
    124,095.97/171,311.93 = 76,390.21/x
  3. Step 3: Cross multiply
    124,095.97x = 171,311.93 × 76,390.21
  4. Step 4: Simplify right side
    124,095.97x = 13,086,554,308.21
  5. Step 5: Solve for x
    x = 13,086,554,308.21/124,095.97
  6. Step 6: Final answer
    x = 105,455.11

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1.5x scale

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.