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Finding the Fourth Proportional to 99,277.80, 137,004.12 and 53,955.78

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Solution

The fourth proportional to 99,277.80, 137,004.12 and 53,955.78 is: 74,459.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,277.80 : 137,004.12 = 53,955.78 : x
  2. Step 2: Convert to fraction form
    99,277.80/137,004.12 = 53,955.78/x
  3. Step 3: Cross multiply
    99,277.80x = 137,004.12 × 53,955.78
  4. Step 4: Simplify right side
    99,277.80x = 7,392,164,157.81
  5. Step 5: Solve for x
    x = 7,392,164,157.81/99,277.80
  6. Step 6: Final answer
    x = 74,459.39

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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.