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Finding the Fourth Proportional to 116,154.99, 160,343.01 and 78,480.27

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Solution

The fourth proportional to 116,154.99, 160,343.01 and 78,480.27 is: 108,335.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,154.99 : 160,343.01 = 78,480.27 : x
  2. Step 2: Convert to fraction form
    116,154.99/160,343.01 = 78,480.27/x
  3. Step 3: Cross multiply
    116,154.99x = 160,343.01 × 78,480.27
  4. Step 4: Simplify right side
    116,154.99x = 12,583,762,717.41
  5. Step 5: Solve for x
    x = 12,583,762,717.41/116,154.99
  6. Step 6: Final answer
    x = 108,335.96

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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.