Home / 112,077.76-154,667.28-61,777.60

Finding the Fourth Proportional to 112,077.76, 154,667.28 and 61,777.60

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Solution

The fourth proportional to 112,077.76, 154,667.28 and 61,777.60 is: 85,253.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,077.76 : 154,667.28 = 61,777.60 : x
  2. Step 2: Convert to fraction form
    112,077.76/154,667.28 = 61,777.60/x
  3. Step 3: Cross multiply
    112,077.76x = 154,667.28 × 61,777.60
  4. Step 4: Simplify right side
    112,077.76x = 9,554,973,356.93
  5. Step 5: Solve for x
    x = 9,554,973,356.93/112,077.76
  6. Step 6: Final answer
    x = 85,253.07

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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.