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Finding the Fourth Proportional to 115,701.60, 159,621.08 and 75,400.68

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Solution

The fourth proportional to 115,701.60, 159,621.08 and 75,400.68 is: 104,022.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,701.60 : 159,621.08 = 75,400.68 : x
  2. Step 2: Convert to fraction form
    115,701.60/159,621.08 = 75,400.68/x
  3. Step 3: Cross multiply
    115,701.60x = 159,621.08 × 75,400.68
  4. Step 4: Simplify right side
    115,701.60x = 12,035,537,974.33
  5. Step 5: Solve for x
    x = 12,035,537,974.33/115,701.60
  6. Step 6: Final answer
    x = 104,022.23

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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.