Home / 115,088.22-172,402.70-91,435.82

Finding the Fourth Proportional to 115,088.22, 172,402.70 and 91,435.82

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Solution

The fourth proportional to 115,088.22, 172,402.70 and 91,435.82 is: 136,971.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,088.22 : 172,402.70 = 91,435.82 : x
  2. Step 2: Convert to fraction form
    115,088.22/172,402.70 = 91,435.82/x
  3. Step 3: Cross multiply
    115,088.22x = 172,402.70 × 91,435.82
  4. Step 4: Simplify right side
    115,088.22x = 15,763,780,925.52
  5. Step 5: Solve for x
    x = 15,763,780,925.52/115,088.22
  6. Step 6: Final answer
    x = 136,971.28

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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.