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Finding the Fourth Proportional to 172,392.71, 237,750.50 and 120,683.31

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Solution

The fourth proportional to 172,392.71, 237,750.50 and 120,683.31 is: 166,436.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,392.71 : 237,750.50 = 120,683.31 : x
  2. Step 2: Convert to fraction form
    172,392.71/237,750.50 = 120,683.31/x
  3. Step 3: Cross multiply
    172,392.71x = 237,750.50 × 120,683.31
  4. Step 4: Simplify right side
    172,392.71x = 28,692,516,690.74
  5. Step 5: Solve for x
    x = 28,692,516,690.74/172,392.71
  6. Step 6: Final answer
    x = 166,436.95

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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.