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Finding the Fourth Proportional to 199,869.79, 299,887.72 and 87,492.16

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Solution

The fourth proportional to 199,869.79, 299,887.72 and 87,492.16 is: 131,274.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,869.79 : 299,887.72 = 87,492.16 : x
  2. Step 2: Convert to fraction form
    199,869.79/299,887.72 = 87,492.16/x
  3. Step 3: Cross multiply
    199,869.79x = 299,887.72 × 87,492.16
  4. Step 4: Simplify right side
    199,869.79x = 26,237,824,380.28
  5. Step 5: Solve for x
    x = 26,237,824,380.28/199,869.79
  6. Step 6: Final answer
    x = 131,274.59

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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.