Home / 109,636.18-151,304.01-77,381.12

Finding the Fourth Proportional to 109,636.18, 151,304.01 and 77,381.12

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Solution

The fourth proportional to 109,636.18, 151,304.01 and 77,381.12 is: 106,790.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,636.18 : 151,304.01 = 77,381.12 : x
  2. Step 2: Convert to fraction form
    109,636.18/151,304.01 = 77,381.12/x
  3. Step 3: Cross multiply
    109,636.18x = 151,304.01 × 77,381.12
  4. Step 4: Simplify right side
    109,636.18x = 11,708,072,997.77
  5. Step 5: Solve for x
    x = 11,708,072,997.77/109,636.18
  6. Step 6: Final answer
    x = 106,790.23

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1.5x scale

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.