Home / 112,985.96-155,915.34-61,997.54

Finding the Fourth Proportional to 112,985.96, 155,915.34 and 61,997.54

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Solution

The fourth proportional to 112,985.96, 155,915.34 and 61,997.54 is: 85,553.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,985.96 : 155,915.34 = 61,997.54 : x
  2. Step 2: Convert to fraction form
    112,985.96/155,915.34 = 61,997.54/x
  3. Step 3: Cross multiply
    112,985.96x = 155,915.34 × 61,997.54
  4. Step 4: Simplify right side
    112,985.96x = 9,666,367,528.26
  5. Step 5: Solve for x
    x = 9,666,367,528.26/112,985.96
  6. Step 6: Final answer
    x = 85,553.71

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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.