Home / 113,210-169,581.60-66,320.72

Finding the Fourth Proportional to 113,210, 169,581.60 and 66,320.72

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Solution

The fourth proportional to 113,210, 169,581.60 and 66,320.72 is: 99,344.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,210 : 169,581.60 = 66,320.72 : x
  2. Step 2: Convert to fraction form
    113,210/169,581.60 = 66,320.72/x
  3. Step 3: Cross multiply
    113,210x = 169,581.60 × 66,320.72
  4. Step 4: Simplify right side
    113,210x = 11,246,773,810.75
  5. Step 5: Solve for x
    x = 11,246,773,810.75/113,210
  6. Step 6: Final answer
    x = 99,344.35

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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.