Home / 105,419.24-158,128.86-48,487.40

Finding the Fourth Proportional to 105,419.24, 158,128.86 and 48,487.40

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Solution

The fourth proportional to 105,419.24, 158,128.86 and 48,487.40 is: 72,731.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,419.24 : 158,128.86 = 48,487.40 : x
  2. Step 2: Convert to fraction form
    105,419.24/158,128.86 = 48,487.40/x
  3. Step 3: Cross multiply
    105,419.24x = 158,128.86 × 48,487.40
  4. Step 4: Simplify right side
    105,419.24x = 7,667,257,286.36
  5. Step 5: Solve for x
    x = 7,667,257,286.36/105,419.24
  6. Step 6: Final answer
    x = 72,731.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.