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Finding the Fourth Proportional to 170,749.40, 256,124.10 and 82,045.40

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Solution

The fourth proportional to 170,749.40, 256,124.10 and 82,045.40 is: 123,068.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,749.40 : 256,124.10 = 82,045.40 : x
  2. Step 2: Convert to fraction form
    170,749.40/256,124.10 = 82,045.40/x
  3. Step 3: Cross multiply
    170,749.40x = 256,124.10 × 82,045.40
  4. Step 4: Simplify right side
    170,749.40x = 21,013,804,234.14
  5. Step 5: Solve for x
    x = 21,013,804,234.14/170,749.40
  6. Step 6: Final answer
    x = 123,068.10

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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.