Home / 145,421.20-200,671.32-81,768.88

Finding the Fourth Proportional to 145,421.20, 200,671.32 and 81,768.88

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Solution

The fourth proportional to 145,421.20, 200,671.32 and 81,768.88 is: 112,835.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,421.20 : 200,671.32 = 81,768.88 : x
  2. Step 2: Convert to fraction form
    145,421.20/200,671.32 = 81,768.88/x
  3. Step 3: Cross multiply
    145,421.20x = 200,671.32 × 81,768.88
  4. Step 4: Simplify right side
    145,421.20x = 16,408,669,084.52
  5. Step 5: Solve for x
    x = 16,408,669,084.52/145,421.20
  6. Step 6: Final answer
    x = 112,835.47

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.