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Finding the Fourth Proportional to 117,352.96, 161,946.40 and 63,639.20

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Solution

The fourth proportional to 117,352.96, 161,946.40 and 63,639.20 is: 87,821.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,352.96 : 161,946.40 = 63,639.20 : x
  2. Step 2: Convert to fraction form
    117,352.96/161,946.40 = 63,639.20/x
  3. Step 3: Cross multiply
    117,352.96x = 161,946.40 × 63,639.20
  4. Step 4: Simplify right side
    117,352.96x = 10,306,139,338.88
  5. Step 5: Solve for x
    x = 10,306,139,338.88/117,352.96
  6. Step 6: Final answer
    x = 87,821.72

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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.