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Finding the Fourth Proportional to 147,041.40, 202,908.72 and 81,626.87

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Solution

The fourth proportional to 147,041.40, 202,908.72 and 81,626.87 is: 112,640.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,041.40 : 202,908.72 = 81,626.87 : x
  2. Step 2: Convert to fraction form
    147,041.40/202,908.72 = 81,626.87/x
  3. Step 3: Cross multiply
    147,041.40x = 202,908.72 × 81,626.87
  4. Step 4: Simplify right side
    147,041.40x = 16,562,802,694.76
  5. Step 5: Solve for x
    x = 16,562,802,694.76/147,041.40
  6. Step 6: Final answer
    x = 112,640.40

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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.