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Finding the Fourth Proportional to 101,281.10, 151,921.65 and 31,160.30

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Solution

The fourth proportional to 101,281.10, 151,921.65 and 31,160.30 is: 46,740.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,281.10 : 151,921.65 = 31,160.30 : x
  2. Step 2: Convert to fraction form
    101,281.10/151,921.65 = 31,160.30/x
  3. Step 3: Cross multiply
    101,281.10x = 151,921.65 × 31,160.30
  4. Step 4: Simplify right side
    101,281.10x = 4,733,924,190.50
  5. Step 5: Solve for x
    x = 4,733,924,190.50/101,281.10
  6. Step 6: Final answer
    x = 46,740.45

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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.