Home / 93,434.86-128,899.66-57,137.90

Finding the Fourth Proportional to 93,434.86, 128,899.66 and 57,137.90

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Solution

The fourth proportional to 93,434.86, 128,899.66 and 57,137.90 is: 78,825.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,434.86 : 128,899.66 = 57,137.90 : x
  2. Step 2: Convert to fraction form
    93,434.86/128,899.66 = 57,137.90/x
  3. Step 3: Cross multiply
    93,434.86x = 128,899.66 × 57,137.90
  4. Step 4: Simplify right side
    93,434.86x = 7,365,055,202.90
  5. Step 5: Solve for x
    x = 7,365,055,202.90/93,434.86
  6. Step 6: Final answer
    x = 78,825.56

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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.