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Finding the Fourth Proportional to 114,045.60, 171,068.40 and 76,720.80

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Solution

The fourth proportional to 114,045.60, 171,068.40 and 76,720.80 is: 115,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,045.60 : 171,068.40 = 76,720.80 : x
  2. Step 2: Convert to fraction form
    114,045.60/171,068.40 = 76,720.80/x
  3. Step 3: Cross multiply
    114,045.60x = 171,068.40 × 76,720.80
  4. Step 4: Simplify right side
    114,045.60x = 13,124,504,502.72
  5. Step 5: Solve for x
    x = 13,124,504,502.72/114,045.60
  6. Step 6: Final answer
    x = 115,081.20

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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.