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Finding the Fourth Proportional to 101,048.90, 151,901.40 and 71,670.20

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Solution

The fourth proportional to 101,048.90, 151,901.40 and 71,670.20 is: 107,737.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,048.90 : 151,901.40 = 71,670.20 : x
  2. Step 2: Convert to fraction form
    101,048.90/151,901.40 = 71,670.20/x
  3. Step 3: Cross multiply
    101,048.90x = 151,901.40 × 71,670.20
  4. Step 4: Simplify right side
    101,048.90x = 10,886,803,718.28
  5. Step 5: Solve for x
    x = 10,886,803,718.28/101,048.90
  6. Step 6: Final answer
    x = 107,737.97

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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.