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Finding the Fourth Proportional to 101,477.72, 140,154.40 and 69,157.02

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Solution

The fourth proportional to 101,477.72, 140,154.40 and 69,157.02 is: 95,515.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,477.72 : 140,154.40 = 69,157.02 : x
  2. Step 2: Convert to fraction form
    101,477.72/140,154.40 = 69,157.02/x
  3. Step 3: Cross multiply
    101,477.72x = 140,154.40 × 69,157.02
  4. Step 4: Simplify right side
    101,477.72x = 9,692,660,643.89
  5. Step 5: Solve for x
    x = 9,692,660,643.89/101,477.72
  6. Step 6: Final answer
    x = 95,515.16

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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.