Home / 109,431.55-151,027.55-63,501.31

Finding the Fourth Proportional to 109,431.55, 151,027.55 and 63,501.31

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Solution

The fourth proportional to 109,431.55, 151,027.55 and 63,501.31 is: 87,638.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,431.55 : 151,027.55 = 63,501.31 : x
  2. Step 2: Convert to fraction form
    109,431.55/151,027.55 = 63,501.31/x
  3. Step 3: Cross multiply
    109,431.55x = 151,027.55 × 63,501.31
  4. Step 4: Simplify right side
    109,431.55x = 9,590,447,271.09
  5. Step 5: Solve for x
    x = 9,590,447,271.09/109,431.55
  6. Step 6: Final answer
    x = 87,638.78

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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.