Home / 153,405.07-211,764.32-103,133.23

Finding the Fourth Proportional to 153,405.07, 211,764.32 and 103,133.23

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Solution

The fourth proportional to 153,405.07, 211,764.32 and 103,133.23 is: 142,367.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,405.07 : 211,764.32 = 103,133.23 : x
  2. Step 2: Convert to fraction form
    153,405.07/211,764.32 = 103,133.23/x
  3. Step 3: Cross multiply
    153,405.07x = 211,764.32 × 103,133.23
  4. Step 4: Simplify right side
    153,405.07x = 21,839,938,320.35
  5. Step 5: Solve for x
    x = 21,839,938,320.35/153,405.07
  6. Step 6: Final answer
    x = 142,367.77

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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.