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Finding the Fourth Proportional to 115,067.60, 158,778.60 and 64,756.88

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Solution

The fourth proportional to 115,067.60, 158,778.60 and 64,756.88 is: 89,356.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,067.60 : 158,778.60 = 64,756.88 : x
  2. Step 2: Convert to fraction form
    115,067.60/158,778.60 = 64,756.88/x
  3. Step 3: Cross multiply
    115,067.60x = 158,778.60 × 64,756.88
  4. Step 4: Simplify right side
    115,067.60x = 10,282,006,746.77
  5. Step 5: Solve for x
    x = 10,282,006,746.77/115,067.60
  6. Step 6: Final answer
    x = 89,356.23

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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.