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Finding the Fourth Proportional to 117,139.85, 161,653.06 and 63,424.90

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Solution

The fourth proportional to 117,139.85, 161,653.06 and 63,424.90 is: 87,526.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,139.85 : 161,653.06 = 63,424.90 : x
  2. Step 2: Convert to fraction form
    117,139.85/161,653.06 = 63,424.90/x
  3. Step 3: Cross multiply
    117,139.85x = 161,653.06 × 63,424.90
  4. Step 4: Simplify right side
    117,139.85x = 10,252,828,356.93
  5. Step 5: Solve for x
    x = 10,252,828,356.93/117,139.85
  6. Step 6: Final answer
    x = 87,526.40

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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.