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Finding the Fourth Proportional to 118,887.47, 164,089.47 and 109,312.20

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Solution

The fourth proportional to 118,887.47, 164,089.47 and 109,312.20 is: 150,873.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,887.47 : 164,089.47 = 109,312.20 : x
  2. Step 2: Convert to fraction form
    118,887.47/164,089.47 = 109,312.20/x
  3. Step 3: Cross multiply
    118,887.47x = 164,089.47 × 109,312.20
  4. Step 4: Simplify right side
    118,887.47x = 17,936,981,919.47
  5. Step 5: Solve for x
    x = 17,936,981,919.47/118,887.47
  6. Step 6: Final answer
    x = 150,873.62

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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.