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Finding the Fourth Proportional to 99,406.49, 149,203.15 and 52,055.55

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Solution

The fourth proportional to 99,406.49, 149,203.15 and 52,055.55 is: 78,132.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,406.49 : 149,203.15 = 52,055.55 : x
  2. Step 2: Convert to fraction form
    99,406.49/149,203.15 = 52,055.55/x
  3. Step 3: Cross multiply
    99,406.49x = 149,203.15 × 52,055.55
  4. Step 4: Simplify right side
    99,406.49x = 7,766,851,904.84
  5. Step 5: Solve for x
    x = 7,766,851,904.84/99,406.49
  6. Step 6: Final answer
    x = 78,132.25

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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.