Home / 92,916.42-128,159.34-57,126.12

Finding the Fourth Proportional to 92,916.42, 128,159.34 and 57,126.12

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Solution

The fourth proportional to 92,916.42, 128,159.34 and 57,126.12 is: 78,793.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,916.42 : 128,159.34 = 57,126.12 : x
  2. Step 2: Convert to fraction form
    92,916.42/128,159.34 = 57,126.12/x
  3. Step 3: Cross multiply
    92,916.42x = 128,159.34 × 57,126.12
  4. Step 4: Simplify right side
    92,916.42x = 7,321,245,835.96
  5. Step 5: Solve for x
    x = 7,321,245,835.96/92,916.42
  6. Step 6: Final answer
    x = 78,793.89

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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.