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Finding the Fourth Proportional to 115,894.67, 160,011.45 and 88,988.90

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Solution

The fourth proportional to 115,894.67, 160,011.45 and 88,988.90 is: 122,863.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,894.67 : 160,011.45 = 88,988.90 : x
  2. Step 2: Convert to fraction form
    115,894.67/160,011.45 = 88,988.90/x
  3. Step 3: Cross multiply
    115,894.67x = 160,011.45 × 88,988.90
  4. Step 4: Simplify right side
    115,894.67x = 14,239,242,122.85
  5. Step 5: Solve for x
    x = 14,239,242,122.85/115,894.67
  6. Step 6: Final answer
    x = 122,863.65

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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.