Home / 92,938.10-128,254.60-55,212.36

Finding the Fourth Proportional to 92,938.10, 128,254.60 and 55,212.36

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Solution

The fourth proportional to 92,938.10, 128,254.60 and 55,212.36 is: 76,193.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,938.10 : 128,254.60 = 55,212.36 : x
  2. Step 2: Convert to fraction form
    92,938.10/128,254.60 = 55,212.36/x
  3. Step 3: Cross multiply
    92,938.10x = 128,254.60 × 55,212.36
  4. Step 4: Simplify right side
    92,938.10x = 7,081,239,146.86
  5. Step 5: Solve for x
    x = 7,081,239,146.86/92,938.10
  6. Step 6: Final answer
    x = 76,193.07

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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.