Home / 90,865.18-135,606.83-84,849.13

Finding the Fourth Proportional to 90,865.18, 135,606.83 and 84,849.13

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Solution

The fourth proportional to 90,865.18, 135,606.83 and 84,849.13 is: 126,628.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,865.18 : 135,606.83 = 84,849.13 : x
  2. Step 2: Convert to fraction form
    90,865.18/135,606.83 = 84,849.13/x
  3. Step 3: Cross multiply
    90,865.18x = 135,606.83 × 84,849.13
  4. Step 4: Simplify right side
    90,865.18x = 11,506,121,547.56
  5. Step 5: Solve for x
    x = 11,506,121,547.56/90,865.18
  6. Step 6: Final answer
    x = 126,628.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.