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Finding the Fourth Proportional to 199,547.68, 299,320.88 and 81,190.88

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Solution

The fourth proportional to 199,547.68, 299,320.88 and 81,190.88 is: 121,786.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,547.68 : 299,320.88 = 81,190.88 : x
  2. Step 2: Convert to fraction form
    199,547.68/299,320.88 = 81,190.88/x
  3. Step 3: Cross multiply
    199,547.68x = 299,320.88 × 81,190.88
  4. Step 4: Simplify right side
    199,547.68x = 24,302,125,649.57
  5. Step 5: Solve for x
    x = 24,302,125,649.57/199,547.68
  6. Step 6: Final answer
    x = 121,786.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.