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Finding the Fourth Proportional to 139,548.12, 209,320.14 and 34,368.12

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Solution

The fourth proportional to 139,548.12, 209,320.14 and 34,368.12 is: 51,551.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,548.12 : 209,320.14 = 34,368.12 : x
  2. Step 2: Convert to fraction form
    139,548.12/209,320.14 = 34,368.12/x
  3. Step 3: Cross multiply
    139,548.12x = 209,320.14 × 34,368.12
  4. Step 4: Simplify right side
    139,548.12x = 7,193,939,689.94
  5. Step 5: Solve for x
    x = 7,193,939,689.94/139,548.12
  6. Step 6: Final answer
    x = 51,551.68

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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.