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Finding the Fourth Proportional to 101,157.12, 139,553.28 and 63,424.16

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Solution

The fourth proportional to 101,157.12, 139,553.28 and 63,424.16 is: 87,498.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,157.12 : 139,553.28 = 63,424.16 : x
  2. Step 2: Convert to fraction form
    101,157.12/139,553.28 = 63,424.16/x
  3. Step 3: Cross multiply
    101,157.12x = 139,553.28 × 63,424.16
  4. Step 4: Simplify right side
    101,157.12x = 8,851,049,559.24
  5. Step 5: Solve for x
    x = 8,851,049,559.24/101,157.12
  6. Step 6: Final answer
    x = 87,498.04

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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.