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Finding the Fourth Proportional to 170,752.80, 256,126.80 and 77,258.40

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Solution

The fourth proportional to 170,752.80, 256,126.80 and 77,258.40 is: 115,886.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,752.80 : 256,126.80 = 77,258.40 : x
  2. Step 2: Convert to fraction form
    170,752.80/256,126.80 = 77,258.40/x
  3. Step 3: Cross multiply
    170,752.80x = 256,126.80 × 77,258.40
  4. Step 4: Simplify right side
    170,752.80x = 19,787,946,765.12
  5. Step 5: Solve for x
    x = 19,787,946,765.12/170,752.80
  6. Step 6: Final answer
    x = 115,886.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.