Home / 112,988.62-155,997.34-70,013.72

Finding the Fourth Proportional to 112,988.62, 155,997.34 and 70,013.72

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Solution

The fourth proportional to 112,988.62, 155,997.34 and 70,013.72 is: 96,664.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,988.62 : 155,997.34 = 70,013.72 : x
  2. Step 2: Convert to fraction form
    112,988.62/155,997.34 = 70,013.72/x
  3. Step 3: Cross multiply
    112,988.62x = 155,997.34 × 70,013.72
  4. Step 4: Simplify right side
    112,988.62x = 10,921,952,953.45
  5. Step 5: Solve for x
    x = 10,921,952,953.45/112,988.62
  6. Step 6: Final answer
    x = 96,664.19

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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.