Home / 151,378.98-208,903.05-87,753.66

Finding the Fourth Proportional to 151,378.98, 208,903.05 and 87,753.66

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Solution

The fourth proportional to 151,378.98, 208,903.05 and 87,753.66 is: 121,100.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,378.98 : 208,903.05 = 87,753.66 : x
  2. Step 2: Convert to fraction form
    151,378.98/208,903.05 = 87,753.66/x
  3. Step 3: Cross multiply
    151,378.98x = 208,903.05 × 87,753.66
  4. Step 4: Simplify right side
    151,378.98x = 18,332,007,222.66
  5. Step 5: Solve for x
    x = 18,332,007,222.66/151,378.98
  6. Step 6: Final answer
    x = 121,100.08

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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.