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Finding the Fourth Proportional to 111,352.90, 166,810.65 and 103,479.70

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Solution

The fourth proportional to 111,352.90, 166,810.65 and 103,479.70 is: 155,016.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,352.90 : 166,810.65 = 103,479.70 : x
  2. Step 2: Convert to fraction form
    111,352.90/166,810.65 = 103,479.70/x
  3. Step 3: Cross multiply
    111,352.90x = 166,810.65 × 103,479.70
  4. Step 4: Simplify right side
    111,352.90x = 17,261,516,018.81
  5. Step 5: Solve for x
    x = 17,261,516,018.81/111,352.90
  6. Step 6: Final answer
    x = 155,016.31

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1.5x scale

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.