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Finding the Fourth Proportional to 170,071.18, 235,021.90 and 127,555.90

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Solution

The fourth proportional to 170,071.18, 235,021.90 and 127,555.90 is: 176,269.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,071.18 : 235,021.90 = 127,555.90 : x
  2. Step 2: Convert to fraction form
    170,071.18/235,021.90 = 127,555.90/x
  3. Step 3: Cross multiply
    170,071.18x = 235,021.90 × 127,555.90
  4. Step 4: Simplify right side
    170,071.18x = 29,978,429,974.21
  5. Step 5: Solve for x
    x = 29,978,429,974.21/170,071.18
  6. Step 6: Final answer
    x = 176,269.90

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1.5x scale

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.