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Finding the Fourth Proportional to 164,938.20, 247,374.90 and 54,130.20

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Solution

The fourth proportional to 164,938.20, 247,374.90 and 54,130.20 is: 81,184.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,938.20 : 247,374.90 = 54,130.20 : x
  2. Step 2: Convert to fraction form
    164,938.20/247,374.90 = 54,130.20/x
  3. Step 3: Cross multiply
    164,938.20x = 247,374.90 × 54,130.20
  4. Step 4: Simplify right side
    164,938.20x = 13,390,452,811.98
  5. Step 5: Solve for x
    x = 13,390,452,811.98/164,938.20
  6. Step 6: Final answer
    x = 81,184.67

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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.