Home / 155,852.10-215,065.10-87,871.50

Finding the Fourth Proportional to 155,852.10, 215,065.10 and 87,871.50

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Solution

The fourth proportional to 155,852.10, 215,065.10 and 87,871.50 is: 121,256.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,852.10 : 215,065.10 = 87,871.50 : x
  2. Step 2: Convert to fraction form
    155,852.10/215,065.10 = 87,871.50/x
  3. Step 3: Cross multiply
    155,852.10x = 215,065.10 × 87,871.50
  4. Step 4: Simplify right side
    155,852.10x = 18,898,092,934.65
  5. Step 5: Solve for x
    x = 18,898,092,934.65/155,852.10
  6. Step 6: Final answer
    x = 121,256.58

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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.