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Finding the Fourth Proportional to 103,807.16, 155,632.28 and 43,854.20

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Solution

The fourth proportional to 103,807.16, 155,632.28 and 43,854.20 is: 65,748.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,807.16 : 155,632.28 = 43,854.20 : x
  2. Step 2: Convert to fraction form
    103,807.16/155,632.28 = 43,854.20/x
  3. Step 3: Cross multiply
    103,807.16x = 155,632.28 × 43,854.20
  4. Step 4: Simplify right side
    103,807.16x = 6,825,129,133.58
  5. Step 5: Solve for x
    x = 6,825,129,133.58/103,807.16
  6. Step 6: Final answer
    x = 65,748.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.