Home / 170,117.28-255,146.40-45,429.12

Finding the Fourth Proportional to 170,117.28, 255,146.40 and 45,429.12

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Solution

The fourth proportional to 170,117.28, 255,146.40 and 45,429.12 is: 68,135.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,117.28 : 255,146.40 = 45,429.12 : x
  2. Step 2: Convert to fraction form
    170,117.28/255,146.40 = 45,429.12/x
  3. Step 3: Cross multiply
    170,117.28x = 255,146.40 × 45,429.12
  4. Step 4: Simplify right side
    170,117.28x = 11,591,076,423.17
  5. Step 5: Solve for x
    x = 11,591,076,423.17/170,117.28
  6. Step 6: Final answer
    x = 68,135.80

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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.