Home / 207,709.12-286,638.72-112,215.76

Finding the Fourth Proportional to 207,709.12, 286,638.72 and 112,215.76

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Solution

The fourth proportional to 207,709.12, 286,638.72 and 112,215.76 is: 154,857.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,709.12 : 286,638.72 = 112,215.76 : x
  2. Step 2: Convert to fraction form
    207,709.12/286,638.72 = 112,215.76/x
  3. Step 3: Cross multiply
    207,709.12x = 286,638.72 × 112,215.76
  4. Step 4: Simplify right side
    207,709.12x = 32,165,381,810.23
  5. Step 5: Solve for x
    x = 32,165,381,810.23/207,709.12
  6. Step 6: Final answer
    x = 154,857.82

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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.