Home / 128,263.56-192,398.70-60,779.76

Finding the Fourth Proportional to 128,263.56, 192,398.70 and 60,779.76

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Solution

The fourth proportional to 128,263.56, 192,398.70 and 60,779.76 is: 91,171.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,263.56 : 192,398.70 = 60,779.76 : x
  2. Step 2: Convert to fraction form
    128,263.56/192,398.70 = 60,779.76/x
  3. Step 3: Cross multiply
    128,263.56x = 192,398.70 × 60,779.76
  4. Step 4: Simplify right side
    128,263.56x = 11,693,946,810.31
  5. Step 5: Solve for x
    x = 11,693,946,810.31/128,263.56
  6. Step 6: Final answer
    x = 91,171.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.