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Finding the Fourth Proportional to 117,154.85, 161,674.47 and 63,439.87

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Solution

The fourth proportional to 117,154.85, 161,674.47 and 63,439.87 is: 87,547.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,154.85 : 161,674.47 = 63,439.87 : x
  2. Step 2: Convert to fraction form
    117,154.85/161,674.47 = 63,439.87/x
  3. Step 3: Cross multiply
    117,154.85x = 161,674.47 × 63,439.87
  4. Step 4: Simplify right side
    117,154.85x = 10,256,607,685.93
  5. Step 5: Solve for x
    x = 10,256,607,685.93/117,154.85
  6. Step 6: Final answer
    x = 87,547.44

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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.