Home / 81,173.13-112,050.24-72,660.23

Finding the Fourth Proportional to 81,173.13, 112,050.24 and 72,660.23

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Solution

The fourth proportional to 81,173.13, 112,050.24 and 72,660.23 is: 100,299.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,173.13 : 112,050.24 = 72,660.23 : x
  2. Step 2: Convert to fraction form
    81,173.13/112,050.24 = 72,660.23/x
  3. Step 3: Cross multiply
    81,173.13x = 112,050.24 × 72,660.23
  4. Step 4: Simplify right side
    81,173.13x = 8,141,596,490.08
  5. Step 5: Solve for x
    x = 8,141,596,490.08/81,173.13
  6. Step 6: Final answer
    x = 100,299.16

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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.