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Finding the Fourth Proportional to 170,435.68, 235,626.40 and 127,920.40

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Solution

The fourth proportional to 170,435.68, 235,626.40 and 127,920.40 is: 176,849.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,435.68 : 235,626.40 = 127,920.40 : x
  2. Step 2: Convert to fraction form
    170,435.68/235,626.40 = 127,920.40/x
  3. Step 3: Cross multiply
    170,435.68x = 235,626.40 × 127,920.40
  4. Step 4: Simplify right side
    170,435.68x = 30,141,423,338.56
  5. Step 5: Solve for x
    x = 30,141,423,338.56/170,435.68
  6. Step 6: Final answer
    x = 176,849.26

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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.