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Finding the Fourth Proportional to 146,989.68, 220,525.68 and 47,155.68

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Solution

The fourth proportional to 146,989.68, 220,525.68 and 47,155.68 is: 70,746.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,989.68 : 220,525.68 = 47,155.68 : x
  2. Step 2: Convert to fraction form
    146,989.68/220,525.68 = 47,155.68/x
  3. Step 3: Cross multiply
    146,989.68x = 220,525.68 × 47,155.68
  4. Step 4: Simplify right side
    146,989.68x = 10,399,038,397.86
  5. Step 5: Solve for x
    x = 10,399,038,397.86/146,989.68
  6. Step 6: Final answer
    x = 70,746.72

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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.