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Finding the Fourth Proportional to 112,804.90, 155,687.34 and 65,048.92

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Solution

The fourth proportional to 112,804.90, 155,687.34 and 65,048.92 is: 89,777.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,804.90 : 155,687.34 = 65,048.92 : x
  2. Step 2: Convert to fraction form
    112,804.90/155,687.34 = 65,048.92/x
  3. Step 3: Cross multiply
    112,804.90x = 155,687.34 × 65,048.92
  4. Step 4: Simplify right side
    112,804.90x = 10,127,293,324.67
  5. Step 5: Solve for x
    x = 10,127,293,324.67/112,804.90
  6. Step 6: Final answer
    x = 89,777.07

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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.