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Finding the Fourth Proportional to 147,807.92, 203,975.12 and 84,145.63

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Solution

The fourth proportional to 147,807.92, 203,975.12 and 84,145.63 is: 116,121.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,807.92 : 203,975.12 = 84,145.63 : x
  2. Step 2: Convert to fraction form
    147,807.92/203,975.12 = 84,145.63/x
  3. Step 3: Cross multiply
    147,807.92x = 203,975.12 × 84,145.63
  4. Step 4: Simplify right side
    147,807.92x = 17,163,614,976.73
  5. Step 5: Solve for x
    x = 17,163,614,976.73/147,807.92
  6. Step 6: Final answer
    x = 116,121.08

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1.5x scale

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.