Home / 136,403.80-188,172.05-105,980.92

Finding the Fourth Proportional to 136,403.80, 188,172.05 and 105,980.92

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Solution

The fourth proportional to 136,403.80, 188,172.05 and 105,980.92 is: 146,203.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,403.80 : 188,172.05 = 105,980.92 : x
  2. Step 2: Convert to fraction form
    136,403.80/188,172.05 = 105,980.92/x
  3. Step 3: Cross multiply
    136,403.80x = 188,172.05 × 105,980.92
  4. Step 4: Simplify right side
    136,403.80x = 19,942,645,976.95
  5. Step 5: Solve for x
    x = 19,942,645,976.95/136,403.80
  6. Step 6: Final answer
    x = 146,203.01

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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.