Home / 151,378.74-208,927.20-87,753.42

Finding the Fourth Proportional to 151,378.74, 208,927.20 and 87,753.42

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Solution

The fourth proportional to 151,378.74, 208,927.20 and 87,753.42 is: 121,113.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,378.74 : 208,927.20 = 87,753.42 : x
  2. Step 2: Convert to fraction form
    151,378.74/208,927.20 = 87,753.42/x
  3. Step 3: Cross multiply
    151,378.74x = 208,927.20 × 87,753.42
  4. Step 4: Simplify right side
    151,378.74x = 18,334,076,331.02
  5. Step 5: Solve for x
    x = 18,334,076,331.02/151,378.74
  6. Step 6: Final answer
    x = 121,113.94

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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.