Home / 112,886.88-155,777.40-61,889.76

Finding the Fourth Proportional to 112,886.88, 155,777.40 and 61,889.76

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Solution

The fourth proportional to 112,886.88, 155,777.40 and 61,889.76 is: 85,404.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,886.88 : 155,777.40 = 61,889.76 : x
  2. Step 2: Convert to fraction form
    112,886.88/155,777.40 = 61,889.76/x
  3. Step 3: Cross multiply
    112,886.88x = 155,777.40 × 61,889.76
  4. Step 4: Simplify right side
    112,886.88x = 9,641,025,899.42
  5. Step 5: Solve for x
    x = 9,641,025,899.42/112,886.88
  6. Step 6: Final answer
    x = 85,404.31

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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.