Home / 115,038.16-172,327.50-91,385.75

Finding the Fourth Proportional to 115,038.16, 172,327.50 and 91,385.75

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Solution

The fourth proportional to 115,038.16, 172,327.50 and 91,385.75 is: 136,896.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,038.16 : 172,327.50 = 91,385.75 : x
  2. Step 2: Convert to fraction form
    115,038.16/172,327.50 = 91,385.75/x
  3. Step 3: Cross multiply
    115,038.16x = 172,327.50 × 91,385.75
  4. Step 4: Simplify right side
    115,038.16x = 15,748,278,263.94
  5. Step 5: Solve for x
    x = 15,748,278,263.94/115,038.16
  6. Step 6: Final answer
    x = 136,896.13

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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.