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Finding the Fourth Proportional to 124,687.81, 172,070.28 and 70,976.29

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Solution

The fourth proportional to 124,687.81, 172,070.28 and 70,976.29 is: 97,947.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,687.81 : 172,070.28 = 70,976.29 : x
  2. Step 2: Convert to fraction form
    124,687.81/172,070.28 = 70,976.29/x
  3. Step 3: Cross multiply
    124,687.81x = 172,070.28 × 70,976.29
  4. Step 4: Simplify right side
    124,687.81x = 12,212,910,093.66
  5. Step 5: Solve for x
    x = 12,212,910,093.66/124,687.81
  6. Step 6: Final answer
    x = 97,947.91

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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.