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Finding the Fourth Proportional to 100,895.63, 139,252.37 and 58,478.76

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Solution

The fourth proportional to 100,895.63, 139,252.37 and 58,478.76 is: 80,710.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,895.63 : 139,252.37 = 58,478.76 : x
  2. Step 2: Convert to fraction form
    100,895.63/139,252.37 = 58,478.76/x
  3. Step 3: Cross multiply
    100,895.63x = 139,252.37 × 58,478.76
  4. Step 4: Simplify right side
    100,895.63x = 8,143,305,632.27
  5. Step 5: Solve for x
    x = 8,143,305,632.27/100,895.63
  6. Step 6: Final answer
    x = 80,710.20

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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.