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Finding the Fourth Proportional to 101,439.95, 152,173.74 and 42,261.75

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Solution

The fourth proportional to 101,439.95, 152,173.74 and 42,261.75 is: 63,398.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,439.95 : 152,173.74 = 42,261.75 : x
  2. Step 2: Convert to fraction form
    101,439.95/152,173.74 = 42,261.75/x
  3. Step 3: Cross multiply
    101,439.95x = 152,173.74 × 42,261.75
  4. Step 4: Simplify right side
    101,439.95x = 6,431,128,477.20
  5. Step 5: Solve for x
    x = 6,431,128,477.20/101,439.95
  6. Step 6: Final answer
    x = 63,398.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.