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Finding the Fourth Proportional to 114,015.60, 171,007.20 and 39,139.20

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Solution

The fourth proportional to 114,015.60, 171,007.20 and 39,139.20 is: 58,703.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,015.60 : 171,007.20 = 39,139.20 : x
  2. Step 2: Convert to fraction form
    114,015.60/171,007.20 = 39,139.20/x
  3. Step 3: Cross multiply
    114,015.60x = 171,007.20 × 39,139.20
  4. Step 4: Simplify right side
    114,015.60x = 6,693,085,002.24
  5. Step 5: Solve for x
    x = 6,693,085,002.24/114,015.60
  6. Step 6: Final answer
    x = 58,703.24

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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.