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Finding the Fourth Proportional to 153,403.96, 229,912.08 and 69,074.32

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Solution

The fourth proportional to 153,403.96, 229,912.08 and 69,074.32 is: 103,524.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,403.96 : 229,912.08 = 69,074.32 : x
  2. Step 2: Convert to fraction form
    153,403.96/229,912.08 = 69,074.32/x
  3. Step 3: Cross multiply
    153,403.96x = 229,912.08 × 69,074.32
  4. Step 4: Simplify right side
    153,403.96x = 15,881,020,585.79
  5. Step 5: Solve for x
    x = 15,881,020,585.79/153,403.96
  6. Step 6: Final answer
    x = 103,524.19

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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.