Home / 109,784.08-151,381.76-71,472.96

Finding the Fourth Proportional to 109,784.08, 151,381.76 and 71,472.96

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Solution

The fourth proportional to 109,784.08, 151,381.76 and 71,472.96 is: 98,554.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,784.08 : 151,381.76 = 71,472.96 : x
  2. Step 2: Convert to fraction form
    109,784.08/151,381.76 = 71,472.96/x
  3. Step 3: Cross multiply
    109,784.08x = 151,381.76 × 71,472.96
  4. Step 4: Simplify right side
    109,784.08x = 10,819,702,477.21
  5. Step 5: Solve for x
    x = 10,819,702,477.21/109,784.08
  6. Step 6: Final answer
    x = 98,554.38

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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.