Home / 137,417.39-189,656.04-76,992.12

Finding the Fourth Proportional to 137,417.39, 189,656.04 and 76,992.12

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Solution

The fourth proportional to 137,417.39, 189,656.04 and 76,992.12 is: 106,260.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,417.39 : 189,656.04 = 76,992.12 : x
  2. Step 2: Convert to fraction form
    137,417.39/189,656.04 = 76,992.12/x
  3. Step 3: Cross multiply
    137,417.39x = 189,656.04 × 76,992.12
  4. Step 4: Simplify right side
    137,417.39x = 14,602,021,012.89
  5. Step 5: Solve for x
    x = 14,602,021,012.89/137,417.39
  6. Step 6: Final answer
    x = 106,260.36

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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.