Home / 131,430.45-181,185.18-93,639.09

Finding the Fourth Proportional to 131,430.45, 181,185.18 and 93,639.09

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Solution

The fourth proportional to 131,430.45, 181,185.18 and 93,639.09 is: 129,087.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,430.45 : 181,185.18 = 93,639.09 : x
  2. Step 2: Convert to fraction form
    131,430.45/181,185.18 = 93,639.09/x
  3. Step 3: Cross multiply
    131,430.45x = 181,185.18 × 93,639.09
  4. Step 4: Simplify right side
    131,430.45x = 16,966,015,376.69
  5. Step 5: Solve for x
    x = 16,966,015,376.69/131,430.45
  6. Step 6: Final answer
    x = 129,087.40

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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.