Home / 155,819.07-215,017.40-87,852.75

Finding the Fourth Proportional to 155,819.07, 215,017.40 and 87,852.75

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Solution

The fourth proportional to 155,819.07, 215,017.40 and 87,852.75 is: 121,229.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,819.07 : 215,017.40 = 87,852.75 : x
  2. Step 2: Convert to fraction form
    155,819.07/215,017.40 = 87,852.75/x
  3. Step 3: Cross multiply
    155,819.07x = 215,017.40 × 87,852.75
  4. Step 4: Simplify right side
    155,819.07x = 18,889,869,986.13
  5. Step 5: Solve for x
    x = 18,889,869,986.13/155,819.07
  6. Step 6: Final answer
    x = 121,229.52

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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.