Home / 112,899.40-169,416.30-42,785.80

Finding the Fourth Proportional to 112,899.40, 169,416.30 and 42,785.80

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Solution

The fourth proportional to 112,899.40, 169,416.30 and 42,785.80 is: 64,204.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,899.40 : 169,416.30 = 42,785.80 : x
  2. Step 2: Convert to fraction form
    112,899.40/169,416.30 = 42,785.80/x
  3. Step 3: Cross multiply
    112,899.40x = 169,416.30 × 42,785.80
  4. Step 4: Simplify right side
    112,899.40x = 7,248,611,928.54
  5. Step 5: Solve for x
    x = 7,248,611,928.54/112,899.40
  6. Step 6: Final answer
    x = 64,204.17

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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.