Home / 115,070.70-172,380.06-102,531.90

Finding the Fourth Proportional to 115,070.70, 172,380.06 and 102,531.90

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Solution

The fourth proportional to 115,070.70, 172,380.06 and 102,531.90 is: 153,596.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,070.70 : 172,380.06 = 102,531.90 : x
  2. Step 2: Convert to fraction form
    115,070.70/172,380.06 = 102,531.90/x
  3. Step 3: Cross multiply
    115,070.70x = 172,380.06 × 102,531.90
  4. Step 4: Simplify right side
    115,070.70x = 17,674,455,073.91
  5. Step 5: Solve for x
    x = 17,674,455,073.91/115,070.70
  6. Step 6: Final answer
    x = 153,596.49

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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.