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Finding the Fourth Proportional to 179,430.60, 269,364.60 and 90,638.40

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Solution

The fourth proportional to 179,430.60, 269,364.60 and 90,638.40 is: 136,068.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,430.60 : 269,364.60 = 90,638.40 : x
  2. Step 2: Convert to fraction form
    179,430.60/269,364.60 = 90,638.40/x
  3. Step 3: Cross multiply
    179,430.60x = 269,364.60 × 90,638.40
  4. Step 4: Simplify right side
    179,430.60x = 24,414,776,360.64
  5. Step 5: Solve for x
    x = 24,414,776,360.64/179,430.60
  6. Step 6: Final answer
    x = 136,068.08

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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.