Home / 136,815.04-188,752.80-83,079.76

Finding the Fourth Proportional to 136,815.04, 188,752.80 and 83,079.76

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Solution

The fourth proportional to 136,815.04, 188,752.80 and 83,079.76 is: 114,618.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,815.04 : 188,752.80 = 83,079.76 : x
  2. Step 2: Convert to fraction form
    136,815.04/188,752.80 = 83,079.76/x
  3. Step 3: Cross multiply
    136,815.04x = 188,752.80 × 83,079.76
  4. Step 4: Simplify right side
    136,815.04x = 15,681,537,323.33
  5. Step 5: Solve for x
    x = 15,681,537,323.33/136,815.04
  6. Step 6: Final answer
    x = 114,618.52

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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.