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Finding the Fourth Proportional to 147,115.74, 220,706.40 and 53,621.48

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Solution

The fourth proportional to 147,115.74, 220,706.40 and 53,621.48 is: 80,444.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,115.74 : 220,706.40 = 53,621.48 : x
  2. Step 2: Convert to fraction form
    147,115.74/220,706.40 = 53,621.48/x
  3. Step 3: Cross multiply
    147,115.74x = 220,706.40 × 53,621.48
  4. Step 4: Simplify right side
    147,115.74x = 11,834,603,813.47
  5. Step 5: Solve for x
    x = 11,834,603,813.47/147,115.74
  6. Step 6: Final answer
    x = 80,444.17

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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.