Home / 113,821.40-170,885.70-72,349.40

Finding the Fourth Proportional to 113,821.40, 170,885.70 and 72,349.40

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Solution

The fourth proportional to 113,821.40, 170,885.70 and 72,349.40 is: 108,621.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,821.40 : 170,885.70 = 72,349.40 : x
  2. Step 2: Convert to fraction form
    113,821.40/170,885.70 = 72,349.40/x
  3. Step 3: Cross multiply
    113,821.40x = 170,885.70 × 72,349.40
  4. Step 4: Simplify right side
    113,821.40x = 12,363,477,863.58
  5. Step 5: Solve for x
    x = 12,363,477,863.58/113,821.40
  6. Step 6: Final answer
    x = 108,621.73

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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.