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Finding the Fourth Proportional to 139,952.08, 209,782.32 and 61,045.12

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Solution

The fourth proportional to 139,952.08, 209,782.32 and 61,045.12 is: 91,504.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,952.08 : 209,782.32 = 61,045.12 : x
  2. Step 2: Convert to fraction form
    139,952.08/209,782.32 = 61,045.12/x
  3. Step 3: Cross multiply
    139,952.08x = 209,782.32 × 61,045.12
  4. Step 4: Simplify right side
    139,952.08x = 12,806,186,898.28
  5. Step 5: Solve for x
    x = 12,806,186,898.28/139,952.08
  6. Step 6: Final answer
    x = 91,504.08

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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.