Home / 136,275.96-188,047.80-100,485.36

Finding the Fourth Proportional to 136,275.96, 188,047.80 and 100,485.36

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Solution

The fourth proportional to 136,275.96, 188,047.80 and 100,485.36 is: 138,660.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,275.96 : 188,047.80 = 100,485.36 : x
  2. Step 2: Convert to fraction form
    136,275.96/188,047.80 = 100,485.36/x
  3. Step 3: Cross multiply
    136,275.96x = 188,047.80 × 100,485.36
  4. Step 4: Simplify right side
    136,275.96x = 18,896,050,880.21
  5. Step 5: Solve for x
    x = 18,896,050,880.21/136,275.96
  6. Step 6: Final answer
    x = 138,660.19

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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.