Home / 115,280.28-172,938.30-48,720.69

Finding the Fourth Proportional to 115,280.28, 172,938.30 and 48,720.69

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Solution

The fourth proportional to 115,280.28, 172,938.30 and 48,720.69 is: 73,088.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,280.28 : 172,938.30 = 48,720.69 : x
  2. Step 2: Convert to fraction form
    115,280.28/172,938.30 = 48,720.69/x
  3. Step 3: Cross multiply
    115,280.28x = 172,938.30 × 48,720.69
  4. Step 4: Simplify right side
    115,280.28x = 8,425,673,303.43
  5. Step 5: Solve for x
    x = 8,425,673,303.43/115,280.28
  6. Step 6: Final answer
    x = 73,088.59

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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.