Home / 103,690.36-142,961.70-67,823.56

Finding the Fourth Proportional to 103,690.36, 142,961.70 and 67,823.56

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Solution

The fourth proportional to 103,690.36, 142,961.70 and 67,823.56 is: 93,510.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,690.36 : 142,961.70 = 67,823.56 : x
  2. Step 2: Convert to fraction form
    103,690.36/142,961.70 = 67,823.56/x
  3. Step 3: Cross multiply
    103,690.36x = 142,961.70 × 67,823.56
  4. Step 4: Simplify right side
    103,690.36x = 9,696,171,437.65
  5. Step 5: Solve for x
    x = 9,696,171,437.65/103,690.36
  6. Step 6: Final answer
    x = 93,510.83

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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.