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Finding the Fourth Proportional to 139,836.48, 209,754.24 and 56,730.24

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Solution

The fourth proportional to 139,836.48, 209,754.24 and 56,730.24 is: 85,095.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,836.48 : 209,754.24 = 56,730.24 : x
  2. Step 2: Convert to fraction form
    139,836.48/209,754.24 = 56,730.24/x
  3. Step 3: Cross multiply
    139,836.48x = 209,754.24 × 56,730.24
  4. Step 4: Simplify right side
    139,836.48x = 11,899,408,376.22
  5. Step 5: Solve for x
    x = 11,899,408,376.22/139,836.48
  6. Step 6: Final answer
    x = 85,095.17

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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.