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Finding the Fourth Proportional to 109,999.76, 151,721.24 and 100,954.26

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Solution

The fourth proportional to 109,999.76, 151,721.24 and 100,954.26 is: 139,244.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,999.76 : 151,721.24 = 100,954.26 : x
  2. Step 2: Convert to fraction form
    109,999.76/151,721.24 = 100,954.26/x
  3. Step 3: Cross multiply
    109,999.76x = 151,721.24 × 100,954.26
  4. Step 4: Simplify right side
    109,999.76x = 15,316,905,510.48
  5. Step 5: Solve for x
    x = 15,316,905,510.48/109,999.76
  6. Step 6: Final answer
    x = 139,244.90

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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.