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Finding the Fourth Proportional to 199,655.34, 299,554.29 and 85,755.30

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Solution

The fourth proportional to 199,655.34, 299,554.29 and 85,755.30 is: 128,663.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,655.34 : 299,554.29 = 85,755.30 : x
  2. Step 2: Convert to fraction form
    199,655.34/299,554.29 = 85,755.30/x
  3. Step 3: Cross multiply
    199,655.34x = 299,554.29 × 85,755.30
  4. Step 4: Simplify right side
    199,655.34x = 25,688,368,005.24
  5. Step 5: Solve for x
    x = 25,688,368,005.24/199,655.34
  6. Step 6: Final answer
    x = 128,663.57

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1.5x scale

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.