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Finding the Fourth Proportional to 169,430.60, 253,973.10 and 99,273.80

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Solution

The fourth proportional to 169,430.60, 253,973.10 and 99,273.80 is: 148,809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,430.60 : 253,973.10 = 99,273.80 : x
  2. Step 2: Convert to fraction form
    169,430.60/253,973.10 = 99,273.80/x
  3. Step 3: Cross multiply
    169,430.60x = 253,973.10 × 99,273.80
  4. Step 4: Simplify right side
    169,430.60x = 25,212,874,734.78
  5. Step 5: Solve for x
    x = 25,212,874,734.78/169,430.60
  6. Step 6: Final answer
    x = 148,809.45

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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.