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Finding the Fourth Proportional to 155,027.94, 213,902.01 and 87,959.94

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Solution

The fourth proportional to 155,027.94, 213,902.01 and 87,959.94 is: 121,363.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,027.94 : 213,902.01 = 87,959.94 : x
  2. Step 2: Convert to fraction form
    155,027.94/213,902.01 = 87,959.94/x
  3. Step 3: Cross multiply
    155,027.94x = 213,902.01 × 87,959.94
  4. Step 4: Simplify right side
    155,027.94x = 18,814,807,965.48
  5. Step 5: Solve for x
    x = 18,814,807,965.48/155,027.94
  6. Step 6: Final answer
    x = 121,363.98

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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.