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Finding the Fourth Proportional to 99,316, 137,088 and 63,602.24

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Solution

The fourth proportional to 99,316, 137,088 and 63,602.24 is: 87,791.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,316 : 137,088 = 63,602.24 : x
  2. Step 2: Convert to fraction form
    99,316/137,088 = 63,602.24/x
  3. Step 3: Cross multiply
    99,316x = 137,088 × 63,602.24
  4. Step 4: Simplify right side
    99,316x = 8,719,103,877.12
  5. Step 5: Solve for x
    x = 8,719,103,877.12/99,316
  6. Step 6: Final answer
    x = 87,791.53

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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.