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Finding the Fourth Proportional to 151,009.98, 208,398.15 and 87,367.74

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Solution

The fourth proportional to 151,009.98, 208,398.15 and 87,367.74 is: 120,570.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,009.98 : 208,398.15 = 87,367.74 : x
  2. Step 2: Convert to fraction form
    151,009.98/208,398.15 = 87,367.74/x
  3. Step 3: Cross multiply
    151,009.98x = 208,398.15 × 87,367.74
  4. Step 4: Simplify right side
    151,009.98x = 18,207,275,385.68
  5. Step 5: Solve for x
    x = 18,207,275,385.68/151,009.98
  6. Step 6: Final answer
    x = 120,570.01

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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.