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Finding the Fourth Proportional to 124,392.88, 171,666.80 and 70,687

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Solution

The fourth proportional to 124,392.88, 171,666.80 and 70,687 is: 97,550.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,392.88 : 171,666.80 = 70,687 : x
  2. Step 2: Convert to fraction form
    124,392.88/171,666.80 = 70,687/x
  3. Step 3: Cross multiply
    124,392.88x = 171,666.80 × 70,687
  4. Step 4: Simplify right side
    124,392.88x = 12,134,611,091.60
  5. Step 5: Solve for x
    x = 12,134,611,091.60/124,392.88
  6. Step 6: Final answer
    x = 97,550.69

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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.