Home / 155,810.67-214,967.16-87,819.27

Finding the Fourth Proportional to 155,810.67, 214,967.16 and 87,819.27

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Solution

The fourth proportional to 155,810.67, 214,967.16 and 87,819.27 is: 121,161.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,810.67 : 214,967.16 = 87,819.27 : x
  2. Step 2: Convert to fraction form
    155,810.67/214,967.16 = 87,819.27/x
  3. Step 3: Cross multiply
    155,810.67x = 214,967.16 × 87,819.27
  4. Step 4: Simplify right side
    155,810.67x = 18,878,259,065.17
  5. Step 5: Solve for x
    x = 18,878,259,065.17/155,810.67
  6. Step 6: Final answer
    x = 121,161.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.