Home / 105,635.87-145,778.64-57,888.19

Finding the Fourth Proportional to 105,635.87, 145,778.64 and 57,888.19

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Solution

The fourth proportional to 105,635.87, 145,778.64 and 57,888.19 is: 79,886.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,635.87 : 145,778.64 = 57,888.19 : x
  2. Step 2: Convert to fraction form
    105,635.87/145,778.64 = 57,888.19/x
  3. Step 3: Cross multiply
    105,635.87x = 145,778.64 × 57,888.19
  4. Step 4: Simplify right side
    105,635.87x = 8,438,861,245.82
  5. Step 5: Solve for x
    x = 8,438,861,245.82/105,635.87
  6. Step 6: Final answer
    x = 79,886.33

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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.