Home / 115,038.36-172,586.16-91,434.96

Finding the Fourth Proportional to 115,038.36, 172,586.16 and 91,434.96

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Solution

The fourth proportional to 115,038.36, 172,586.16 and 91,434.96 is: 137,175.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,038.36 : 172,586.16 = 91,434.96 : x
  2. Step 2: Convert to fraction form
    115,038.36/172,586.16 = 91,434.96/x
  3. Step 3: Cross multiply
    115,038.36x = 172,586.16 × 91,434.96
  4. Step 4: Simplify right side
    115,038.36x = 15,780,408,636.15
  5. Step 5: Solve for x
    x = 15,780,408,636.15/115,038.36
  6. Step 6: Final answer
    x = 137,175.19

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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.