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Finding the Fourth Proportional to 125,783.40, 188,675.10 and 73,295.40

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Solution

The fourth proportional to 125,783.40, 188,675.10 and 73,295.40 is: 109,943.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,783.40 : 188,675.10 = 73,295.40 : x
  2. Step 2: Convert to fraction form
    125,783.40/188,675.10 = 73,295.40/x
  3. Step 3: Cross multiply
    125,783.40x = 188,675.10 × 73,295.40
  4. Step 4: Simplify right side
    125,783.40x = 13,829,016,924.54
  5. Step 5: Solve for x
    x = 13,829,016,924.54/125,783.40
  6. Step 6: Final answer
    x = 109,943.10

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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.