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Finding the Fourth Proportional to 101,052.32, 139,446.16 and 55,728.16

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Solution

The fourth proportional to 101,052.32, 139,446.16 and 55,728.16 is: 76,901.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,052.32 : 139,446.16 = 55,728.16 : x
  2. Step 2: Convert to fraction form
    101,052.32/139,446.16 = 55,728.16/x
  3. Step 3: Cross multiply
    101,052.32x = 139,446.16 × 55,728.16
  4. Step 4: Simplify right side
    101,052.32x = 7,771,077,915.87
  5. Step 5: Solve for x
    x = 7,771,077,915.87/101,052.32
  6. Step 6: Final answer
    x = 76,901.53

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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.