Home / 155,697.35-214,863.00-87,715.13

Finding the Fourth Proportional to 155,697.35, 214,863.00 and 87,715.13

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Solution

The fourth proportional to 155,697.35, 214,863.00 and 87,715.13 is: 121,047.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,697.35 : 214,863.00 = 87,715.13 : x
  2. Step 2: Convert to fraction form
    155,697.35/214,863.00 = 87,715.13/x
  3. Step 3: Cross multiply
    155,697.35x = 214,863.00 × 87,715.13
  4. Step 4: Simplify right side
    155,697.35x = 18,846,735,538.61
  5. Step 5: Solve for x
    x = 18,846,735,538.61/155,697.35
  6. Step 6: Final answer
    x = 121,047.25

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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.