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Finding the Fourth Proportional to 170,838.90, 256,258.35 and 70,965.90

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Solution

The fourth proportional to 170,838.90, 256,258.35 and 70,965.90 is: 106,448.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,838.90 : 256,258.35 = 70,965.90 : x
  2. Step 2: Convert to fraction form
    170,838.90/256,258.35 = 70,965.90/x
  3. Step 3: Cross multiply
    170,838.90x = 256,258.35 × 70,965.90
  4. Step 4: Simplify right side
    170,838.90x = 18,185,604,440.27
  5. Step 5: Solve for x
    x = 18,185,604,440.27/170,838.90
  6. Step 6: Final answer
    x = 106,448.85

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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.