Home / 145,321.40-217,836.30-66,492.20

Finding the Fourth Proportional to 145,321.40, 217,836.30 and 66,492.20

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Solution

The fourth proportional to 145,321.40, 217,836.30 and 66,492.20 is: 99,671.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,321.40 : 217,836.30 = 66,492.20 : x
  2. Step 2: Convert to fraction form
    145,321.40/217,836.30 = 66,492.20/x
  3. Step 3: Cross multiply
    145,321.40x = 217,836.30 × 66,492.20
  4. Step 4: Simplify right side
    145,321.40x = 14,484,414,826.86
  5. Step 5: Solve for x
    x = 14,484,414,826.86/145,321.40
  6. Step 6: Final answer
    x = 99,671.59

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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.