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Finding the Fourth Proportional to 114,037.20, 171,055.80 and 76,712.40

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Solution

The fourth proportional to 114,037.20, 171,055.80 and 76,712.40 is: 115,068.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,037.20 : 171,055.80 = 76,712.40 : x
  2. Step 2: Convert to fraction form
    114,037.20/171,055.80 = 76,712.40/x
  3. Step 3: Cross multiply
    114,037.20x = 171,055.80 × 76,712.40
  4. Step 4: Simplify right side
    114,037.20x = 13,122,100,951.92
  5. Step 5: Solve for x
    x = 13,122,100,951.92/114,037.20
  6. Step 6: Final answer
    x = 115,068.60

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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.