Home / 154,387.50-213,054.75-83,731.50

Finding the Fourth Proportional to 154,387.50, 213,054.75 and 83,731.50

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Solution

The fourth proportional to 154,387.50, 213,054.75 and 83,731.50 is: 115,549.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,387.50 : 213,054.75 = 83,731.50 : x
  2. Step 2: Convert to fraction form
    154,387.50/213,054.75 = 83,731.50/x
  3. Step 3: Cross multiply
    154,387.50x = 213,054.75 × 83,731.50
  4. Step 4: Simplify right side
    154,387.50x = 17,839,393,799.63
  5. Step 5: Solve for x
    x = 17,839,393,799.63/154,387.50
  6. Step 6: Final answer
    x = 115,549.47

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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.