Home / 103,895.42-143,446.83-66,220.70

Finding the Fourth Proportional to 103,895.42, 143,446.83 and 66,220.70

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Solution

The fourth proportional to 103,895.42, 143,446.83 and 66,220.70 is: 91,429.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,895.42 : 143,446.83 = 66,220.70 : x
  2. Step 2: Convert to fraction form
    103,895.42/143,446.83 = 66,220.70/x
  3. Step 3: Cross multiply
    103,895.42x = 143,446.83 × 66,220.70
  4. Step 4: Simplify right side
    103,895.42x = 9,499,149,495.38
  5. Step 5: Solve for x
    x = 9,499,149,495.38/103,895.42
  6. Step 6: Final answer
    x = 91,429.92

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1.5x scale

Why These Related Problems?

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