Home / 117,838.64-162,618.36-108,909.20

Finding the Fourth Proportional to 117,838.64, 162,618.36 and 108,909.20

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Solution

The fourth proportional to 117,838.64, 162,618.36 and 108,909.20 is: 150,295.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,838.64 : 162,618.36 = 108,909.20 : x
  2. Step 2: Convert to fraction form
    117,838.64/162,618.36 = 108,909.20/x
  3. Step 3: Cross multiply
    117,838.64x = 162,618.36 × 108,909.20
  4. Step 4: Simplify right side
    117,838.64x = 17,710,635,492.91
  5. Step 5: Solve for x
    x = 17,710,635,492.91/117,838.64
  6. Step 6: Final answer
    x = 150,295.65

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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.