Home / 112,539.36-155,231.06-72,189.21

Finding the Fourth Proportional to 112,539.36, 155,231.06 and 72,189.21

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Solution

The fourth proportional to 112,539.36, 155,231.06 and 72,189.21 is: 99,574.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,539.36 : 155,231.06 = 72,189.21 : x
  2. Step 2: Convert to fraction form
    112,539.36/155,231.06 = 72,189.21/x
  3. Step 3: Cross multiply
    112,539.36x = 155,231.06 × 72,189.21
  4. Step 4: Simplify right side
    112,539.36x = 11,206,007,588.86
  5. Step 5: Solve for x
    x = 11,206,007,588.86/112,539.36
  6. Step 6: Final answer
    x = 99,574.12

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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.