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Finding the Fourth Proportional to 118,275.66, 163,278.99 and 75,297.87

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Solution

The fourth proportional to 118,275.66, 163,278.99 and 75,297.87 is: 103,948.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,275.66 : 163,278.99 = 75,297.87 : x
  2. Step 2: Convert to fraction form
    118,275.66/163,278.99 = 75,297.87/x
  3. Step 3: Cross multiply
    118,275.66x = 163,278.99 × 75,297.87
  4. Step 4: Simplify right side
    118,275.66x = 12,294,560,162.75
  5. Step 5: Solve for x
    x = 12,294,560,162.75/118,275.66
  6. Step 6: Final answer
    x = 103,948.35

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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.