Home / 155,215.10-214,193.94-86,308.76

Finding the Fourth Proportional to 155,215.10, 214,193.94 and 86,308.76

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Solution

The fourth proportional to 155,215.10, 214,193.94 and 86,308.76 is: 119,104.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,215.10 : 214,193.94 = 86,308.76 : x
  2. Step 2: Convert to fraction form
    155,215.10/214,193.94 = 86,308.76/x
  3. Step 3: Cross multiply
    155,215.10x = 214,193.94 × 86,308.76
  4. Step 4: Simplify right side
    155,215.10x = 18,486,813,360.91
  5. Step 5: Solve for x
    x = 18,486,813,360.91/155,215.10
  6. Step 6: Final answer
    x = 119,104.48

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1.5x scale

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.