Home / 137,086.04-189,177.64-76,656.80

Finding the Fourth Proportional to 137,086.04, 189,177.64 and 76,656.80

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Solution

The fourth proportional to 137,086.04, 189,177.64 and 76,656.80 is: 105,785.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,086.04 : 189,177.64 = 76,656.80 : x
  2. Step 2: Convert to fraction form
    137,086.04/189,177.64 = 76,656.80/x
  3. Step 3: Cross multiply
    137,086.04x = 189,177.64 × 76,656.80
  4. Step 4: Simplify right side
    137,086.04x = 14,501,752,513.95
  5. Step 5: Solve for x
    x = 14,501,752,513.95/137,086.04
  6. Step 6: Final answer
    x = 105,785.77

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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.