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Finding the Fourth Proportional to 117,615.36, 162,334.86 and 72,332.30

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Solution

The fourth proportional to 117,615.36, 162,334.86 and 72,332.30 is: 99,834.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,615.36 : 162,334.86 = 72,332.30 : x
  2. Step 2: Convert to fraction form
    117,615.36/162,334.86 = 72,332.30/x
  3. Step 3: Cross multiply
    117,615.36x = 162,334.86 × 72,332.30
  4. Step 4: Simplify right side
    117,615.36x = 11,742,053,793.98
  5. Step 5: Solve for x
    x = 11,742,053,793.98/117,615.36
  6. Step 6: Final answer
    x = 99,834.36

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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.