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Finding the Fourth Proportional to 101,652.12, 152,478.54 and 71,980.20

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Solution

The fourth proportional to 101,652.12, 152,478.54 and 71,980.20 is: 107,970.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,652.12 : 152,478.54 = 71,980.20 : x
  2. Step 2: Convert to fraction form
    101,652.12/152,478.54 = 71,980.20/x
  3. Step 3: Cross multiply
    101,652.12x = 152,478.54 × 71,980.20
  4. Step 4: Simplify right side
    101,652.12x = 10,975,435,804.91
  5. Step 5: Solve for x
    x = 10,975,435,804.91/101,652.12
  6. Step 6: Final answer
    x = 107,970.55

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1.5x scale

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.