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Finding the Fourth Proportional to 155,720.00, 214,879.50 and 87,748.04

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Solution

The fourth proportional to 155,720.00, 214,879.50 and 87,748.04 is: 121,084.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,720.00 : 214,879.50 = 87,748.04 : x
  2. Step 2: Convert to fraction form
    155,720.00/214,879.50 = 87,748.04/x
  3. Step 3: Cross multiply
    155,720.00x = 214,879.50 × 87,748.04
  4. Step 4: Simplify right side
    155,720.00x = 18,855,255,498.38
  5. Step 5: Solve for x
    x = 18,855,255,498.38/155,720.00
  6. Step 6: Final answer
    x = 121,084.35

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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.