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Finding the Fourth Proportional to 102,641.82, 153,989.85 and 43,479.66

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Solution

The fourth proportional to 102,641.82, 153,989.85 and 43,479.66 is: 65,230.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,641.82 : 153,989.85 = 43,479.66 : x
  2. Step 2: Convert to fraction form
    102,641.82/153,989.85 = 43,479.66/x
  3. Step 3: Cross multiply
    102,641.82x = 153,989.85 × 43,479.66
  4. Step 4: Simplify right side
    102,641.82x = 6,695,426,321.45
  5. Step 5: Solve for x
    x = 6,695,426,321.45/102,641.82
  6. Step 6: Final answer
    x = 65,230.98

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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.