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Finding the Fourth Proportional to 99,516.79, 137,326.94 and 54,804.79

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Solution

The fourth proportional to 99,516.79, 137,326.94 and 54,804.79 is: 75,627.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,516.79 : 137,326.94 = 54,804.79 : x
  2. Step 2: Convert to fraction form
    99,516.79/137,326.94 = 54,804.79/x
  3. Step 3: Cross multiply
    99,516.79x = 137,326.94 × 54,804.79
  4. Step 4: Simplify right side
    99,516.79x = 7,526,173,421.41
  5. Step 5: Solve for x
    x = 7,526,173,421.41/99,516.79
  6. Step 6: Final answer
    x = 75,627.18

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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.