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Finding the Fourth Proportional to 157,228.48, 216,975.56 and 85,608.79

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Solution

The fourth proportional to 157,228.48, 216,975.56 and 85,608.79 is: 118,140.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,228.48 : 216,975.56 = 85,608.79 : x
  2. Step 2: Convert to fraction form
    157,228.48/216,975.56 = 85,608.79/x
  3. Step 3: Cross multiply
    157,228.48x = 216,975.56 × 85,608.79
  4. Step 4: Simplify right side
    157,228.48x = 18,575,015,151.17
  5. Step 5: Solve for x
    x = 18,575,015,151.17/157,228.48
  6. Step 6: Final answer
    x = 118,140.27

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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.