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Finding the Fourth Proportional to 115,998.80, 174,257.40 and 112,888.40

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Solution

The fourth proportional to 115,998.80, 174,257.40 and 112,888.40 is: 169,584.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,998.80 : 174,257.40 = 112,888.40 : x
  2. Step 2: Convert to fraction form
    115,998.80/174,257.40 = 112,888.40/x
  3. Step 3: Cross multiply
    115,998.80x = 174,257.40 × 112,888.40
  4. Step 4: Simplify right side
    115,998.80x = 19,671,639,074.16
  5. Step 5: Solve for x
    x = 19,671,639,074.16/115,998.80
  6. Step 6: Final answer
    x = 169,584.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.