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Finding the Fourth Proportional to 155,505, 214,615.80 and 87,547.44

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Solution

The fourth proportional to 155,505, 214,615.80 and 87,547.44 is: 120,826.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,505 : 214,615.80 = 87,547.44 : x
  2. Step 2: Convert to fraction form
    155,505/214,615.80 = 87,547.44/x
  3. Step 3: Cross multiply
    155,505x = 214,615.80 × 87,547.44
  4. Step 4: Simplify right side
    155,505x = 18,789,063,873.55
  5. Step 5: Solve for x
    x = 18,789,063,873.55/155,505
  6. Step 6: Final answer
    x = 120,826.11

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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.