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Finding the Fourth Proportional to 188,375.19, 282,672.95 and 70,130.31

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Solution

The fourth proportional to 188,375.19, 282,672.95 and 70,130.31 is: 105,236.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,375.19 : 282,672.95 = 70,130.31 : x
  2. Step 2: Convert to fraction form
    188,375.19/282,672.95 = 70,130.31/x
  3. Step 3: Cross multiply
    188,375.19x = 282,672.95 × 70,130.31
  4. Step 4: Simplify right side
    188,375.19x = 19,823,941,261.46
  5. Step 5: Solve for x
    x = 19,823,941,261.46/188,375.19
  6. Step 6: Final answer
    x = 105,236.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.