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Finding the Fourth Proportional to 147,172.43, 220,737.90 and 47,319.93

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Solution

The fourth proportional to 147,172.43, 220,737.90 and 47,319.93 is: 70,973.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,172.43 : 220,737.90 = 47,319.93 : x
  2. Step 2: Convert to fraction form
    147,172.43/220,737.90 = 47,319.93/x
  3. Step 3: Cross multiply
    147,172.43x = 220,737.90 × 47,319.93
  4. Step 4: Simplify right side
    147,172.43x = 10,445,301,976.35
  5. Step 5: Solve for x
    x = 10,445,301,976.35/147,172.43
  6. Step 6: Final answer
    x = 70,973.22

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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.