Home / 109,643.12-151,299.06-61,901.18

Finding the Fourth Proportional to 109,643.12, 151,299.06 and 61,901.18

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Solution

The fourth proportional to 109,643.12, 151,299.06 and 61,901.18 is: 85,418.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,643.12 : 151,299.06 = 61,901.18 : x
  2. Step 2: Convert to fraction form
    109,643.12/151,299.06 = 61,901.18/x
  3. Step 3: Cross multiply
    109,643.12x = 151,299.06 × 61,901.18
  4. Step 4: Simplify right side
    109,643.12x = 9,365,590,346.89
  5. Step 5: Solve for x
    x = 9,365,590,346.89/109,643.12
  6. Step 6: Final answer
    x = 85,418.86

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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.