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Finding the Fourth Proportional to 115,987.96, 160,140.48 and 89,082.40

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Solution

The fourth proportional to 115,987.96, 160,140.48 and 89,082.40 is: 122,992.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,987.96 : 160,140.48 = 89,082.40 : x
  2. Step 2: Convert to fraction form
    115,987.96/160,140.48 = 89,082.40/x
  3. Step 3: Cross multiply
    115,987.96x = 160,140.48 × 89,082.40
  4. Step 4: Simplify right side
    115,987.96x = 14,265,698,295.55
  5. Step 5: Solve for x
    x = 14,265,698,295.55/115,987.96
  6. Step 6: Final answer
    x = 122,992.92

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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.