Home / 100,935.92-139,142.13-64,633.34

Finding the Fourth Proportional to 100,935.92, 139,142.13 and 64,633.34

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Solution

The fourth proportional to 100,935.92, 139,142.13 and 64,633.34 is: 89,098.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,935.92 : 139,142.13 = 64,633.34 : x
  2. Step 2: Convert to fraction form
    100,935.92/139,142.13 = 64,633.34/x
  3. Step 3: Cross multiply
    100,935.92x = 139,142.13 × 64,633.34
  4. Step 4: Simplify right side
    100,935.92x = 8,993,220,596.61
  5. Step 5: Solve for x
    x = 8,993,220,596.61/100,935.92
  6. Step 6: Final answer
    x = 89,098.32

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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.