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Finding the Fourth Proportional to 112,612.60, 168,821.70 and 57,208.60

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Solution

The fourth proportional to 112,612.60, 168,821.70 and 57,208.60 is: 85,763.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,612.60 : 168,821.70 = 57,208.60 : x
  2. Step 2: Convert to fraction form
    112,612.60/168,821.70 = 57,208.60/x
  3. Step 3: Cross multiply
    112,612.60x = 168,821.70 × 57,208.60
  4. Step 4: Simplify right side
    112,612.60x = 9,658,053,106.62
  5. Step 5: Solve for x
    x = 9,658,053,106.62/112,612.60
  6. Step 6: Final answer
    x = 85,763.52

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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.