Home / 112,821.60-169,232.40-42,703.20

Finding the Fourth Proportional to 112,821.60, 169,232.40 and 42,703.20

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Solution

The fourth proportional to 112,821.60, 169,232.40 and 42,703.20 is: 64,054.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,821.60 : 169,232.40 = 42,703.20 : x
  2. Step 2: Convert to fraction form
    112,821.60/169,232.40 = 42,703.20/x
  3. Step 3: Cross multiply
    112,821.60x = 169,232.40 × 42,703.20
  4. Step 4: Simplify right side
    112,821.60x = 7,226,765,023.68
  5. Step 5: Solve for x
    x = 7,226,765,023.68/112,821.60
  6. Step 6: Final answer
    x = 64,054.80

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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.