Home / 207,712.11-286,642.35-112,218.51

Finding the Fourth Proportional to 207,712.11, 286,642.35 and 112,218.51

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Solution

The fourth proportional to 207,712.11, 286,642.35 and 112,218.51 is: 154,861.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,712.11 : 286,642.35 = 112,218.51 : x
  2. Step 2: Convert to fraction form
    207,712.11/286,642.35 = 112,218.51/x
  3. Step 3: Cross multiply
    207,712.11x = 286,642.35 × 112,218.51
  4. Step 4: Simplify right side
    207,712.11x = 32,166,577,419.90
  5. Step 5: Solve for x
    x = 32,166,577,419.90/207,712.11
  6. Step 6: Final answer
    x = 154,861.35

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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.