Home / 153,936.32-212,372.16-103,668.80

Finding the Fourth Proportional to 153,936.32, 212,372.16 and 103,668.80

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Solution

The fourth proportional to 153,936.32, 212,372.16 and 103,668.80 is: 143,022.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,936.32 : 212,372.16 = 103,668.80 : x
  2. Step 2: Convert to fraction form
    153,936.32/212,372.16 = 103,668.80/x
  3. Step 3: Cross multiply
    153,936.32x = 212,372.16 × 103,668.80
  4. Step 4: Simplify right side
    153,936.32x = 22,016,366,980.61
  5. Step 5: Solve for x
    x = 22,016,366,980.61/153,936.32
  6. Step 6: Final answer
    x = 143,022.56

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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.