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Finding the Fourth Proportional to 125,187.63, 187,810.95 and 40,947.45

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Solution

The fourth proportional to 125,187.63, 187,810.95 and 40,947.45 is: 61,430.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,187.63 : 187,810.95 = 40,947.45 : x
  2. Step 2: Convert to fraction form
    125,187.63/187,810.95 = 40,947.45/x
  3. Step 3: Cross multiply
    125,187.63x = 187,810.95 × 40,947.45
  4. Step 4: Simplify right side
    125,187.63x = 7,690,379,462.06
  5. Step 5: Solve for x
    x = 7,690,379,462.06/125,187.63
  6. Step 6: Final answer
    x = 61,430.83

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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.