Home / 103,278.08-142,409.91-71,391.62

Finding the Fourth Proportional to 103,278.08, 142,409.91 and 71,391.62

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Solution

The fourth proportional to 103,278.08, 142,409.91 and 71,391.62 is: 98,441.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,278.08 : 142,409.91 = 71,391.62 : x
  2. Step 2: Convert to fraction form
    103,278.08/142,409.91 = 71,391.62/x
  3. Step 3: Cross multiply
    103,278.08x = 142,409.91 × 71,391.62
  4. Step 4: Simplify right side
    103,278.08x = 10,166,874,178.95
  5. Step 5: Solve for x
    x = 10,166,874,178.95/103,278.08
  6. Step 6: Final answer
    x = 98,441.74

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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.