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Finding the Fourth Proportional to 101,172.10, 151,818.90 and 42,001.60

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Solution

The fourth proportional to 101,172.10, 151,818.90 and 42,001.60 is: 63,027.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,172.10 : 151,818.90 = 42,001.60 : x
  2. Step 2: Convert to fraction form
    101,172.10/151,818.90 = 42,001.60/x
  3. Step 3: Cross multiply
    101,172.10x = 151,818.90 × 42,001.60
  4. Step 4: Simplify right side
    101,172.10x = 6,376,636,710.24
  5. Step 5: Solve for x
    x = 6,376,636,710.24/101,172.10
  6. Step 6: Final answer
    x = 63,027.62

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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.