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Finding the Fourth Proportional to 172,278.80, 237,725.70 and 103,364.60

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Solution

The fourth proportional to 172,278.80, 237,725.70 and 103,364.60 is: 142,631.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,278.80 : 237,725.70 = 103,364.60 : x
  2. Step 2: Convert to fraction form
    172,278.80/237,725.70 = 103,364.60/x
  3. Step 3: Cross multiply
    172,278.80x = 237,725.70 × 103,364.60
  4. Step 4: Simplify right side
    172,278.80x = 24,572,421,890.22
  5. Step 5: Solve for x
    x = 24,572,421,890.22/172,278.80
  6. Step 6: Final answer
    x = 142,631.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.