Home / 105,358.92-145,393.20-57,611.76

Finding the Fourth Proportional to 105,358.92, 145,393.20 and 57,611.76

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Solution

The fourth proportional to 105,358.92, 145,393.20 and 57,611.76 is: 79,503.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,358.92 : 145,393.20 = 57,611.76 : x
  2. Step 2: Convert to fraction form
    105,358.92/145,393.20 = 57,611.76/x
  3. Step 3: Cross multiply
    105,358.92x = 145,393.20 × 57,611.76
  4. Step 4: Simplify right side
    105,358.92x = 8,376,358,144.03
  5. Step 5: Solve for x
    x = 8,376,358,144.03/105,358.92
  6. Step 6: Final answer
    x = 79,503.08

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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.