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Finding the Fourth Proportional to 157,228.95, 216,976.47 and 85,609.41

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Solution

The fourth proportional to 157,228.95, 216,976.47 and 85,609.41 is: 118,141.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,228.95 : 216,976.47 = 85,609.41 : x
  2. Step 2: Convert to fraction form
    157,228.95/216,976.47 = 85,609.41/x
  3. Step 3: Cross multiply
    157,228.95x = 216,976.47 × 85,609.41
  4. Step 4: Simplify right side
    157,228.95x = 18,575,226,927.44
  5. Step 5: Solve for x
    x = 18,575,226,927.44/157,228.95
  6. Step 6: Final answer
    x = 118,141.27

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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.