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Finding the Fourth Proportional to 117,392.65, 162,001.87 and 66,404.30

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Solution

The fourth proportional to 117,392.65, 162,001.87 and 66,404.30 is: 91,637.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,392.65 : 162,001.87 = 66,404.30 : x
  2. Step 2: Convert to fraction form
    117,392.65/162,001.87 = 66,404.30/x
  3. Step 3: Cross multiply
    117,392.65x = 162,001.87 × 66,404.30
  4. Step 4: Simplify right side
    117,392.65x = 10,757,619,800.02
  5. Step 5: Solve for x
    x = 10,757,619,800.02/117,392.65
  6. Step 6: Final answer
    x = 91,637.93

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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.