Home / 99,160.81-136,762.22-90,856.89

Finding the Fourth Proportional to 99,160.81, 136,762.22 and 90,856.89

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Solution

The fourth proportional to 99,160.81, 136,762.22 and 90,856.89 is: 125,309.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,160.81 : 136,762.22 = 90,856.89 : x
  2. Step 2: Convert to fraction form
    99,160.81/136,762.22 = 90,856.89/x
  3. Step 3: Cross multiply
    99,160.81x = 136,762.22 × 90,856.89
  4. Step 4: Simplify right side
    99,160.81x = 12,425,790,205.84
  5. Step 5: Solve for x
    x = 12,425,790,205.84/99,160.81
  6. Step 6: Final answer
    x = 125,309.49

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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.