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Finding the Fourth Proportional to 113,701, 156,907.40 and 63,398.92

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Solution

The fourth proportional to 113,701, 156,907.40 and 63,398.92 is: 87,490.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,701 : 156,907.40 = 63,398.92 : x
  2. Step 2: Convert to fraction form
    113,701/156,907.40 = 63,398.92/x
  3. Step 3: Cross multiply
    113,701x = 156,907.40 × 63,398.92
  4. Step 4: Simplify right side
    113,701x = 9,947,759,700.01
  5. Step 5: Solve for x
    x = 9,947,759,700.01/113,701
  6. Step 6: Final answer
    x = 87,490.52

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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.