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Finding the Fourth Proportional to 119,342.76, 164,688.55 and 65,627.20

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Solution

The fourth proportional to 119,342.76, 164,688.55 and 65,627.20 is: 90,563.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,342.76 : 164,688.55 = 65,627.20 : x
  2. Step 2: Convert to fraction form
    119,342.76/164,688.55 = 65,627.20/x
  3. Step 3: Cross multiply
    119,342.76x = 164,688.55 × 65,627.20
  4. Step 4: Simplify right side
    119,342.76x = 10,808,048,408.56
  5. Step 5: Solve for x
    x = 10,808,048,408.56/119,342.76
  6. Step 6: Final answer
    x = 90,563.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.