Home / 117,140.35-161,653.75-63,425.40

Finding the Fourth Proportional to 117,140.35, 161,653.75 and 63,425.40

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Solution

The fourth proportional to 117,140.35, 161,653.75 and 63,425.40 is: 87,527.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,140.35 : 161,653.75 = 63,425.40 : x
  2. Step 2: Convert to fraction form
    117,140.35/161,653.75 = 63,425.40/x
  3. Step 3: Cross multiply
    117,140.35x = 161,653.75 × 63,425.40
  4. Step 4: Simplify right side
    117,140.35x = 10,252,952,946.98
  5. Step 5: Solve for x
    x = 10,252,952,946.98/117,140.35
  6. Step 6: Final answer
    x = 87,527.09

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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.