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Finding the Fourth Proportional to 155,487, 214,570.14 and 87,504.12

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Solution

The fourth proportional to 155,487, 214,570.14 and 87,504.12 is: 120,754.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,487 : 214,570.14 = 87,504.12 : x
  2. Step 2: Convert to fraction form
    155,487/214,570.14 = 87,504.12/x
  3. Step 3: Cross multiply
    155,487x = 214,570.14 × 87,504.12
  4. Step 4: Simplify right side
    155,487x = 18,775,771,278.98
  5. Step 5: Solve for x
    x = 18,775,771,278.98/155,487
  6. Step 6: Final answer
    x = 120,754.61

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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.