Home / 93,618.40-140,719.20-91,868.80

Finding the Fourth Proportional to 93,618.40, 140,719.20 and 91,868.80

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Solution

The fourth proportional to 93,618.40, 140,719.20 and 91,868.80 is: 138,089.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,618.40 : 140,719.20 = 91,868.80 : x
  2. Step 2: Convert to fraction form
    93,618.40/140,719.20 = 91,868.80/x
  3. Step 3: Cross multiply
    93,618.40x = 140,719.20 × 91,868.80
  4. Step 4: Simplify right side
    93,618.40x = 12,927,704,040.96
  5. Step 5: Solve for x
    x = 12,927,704,040.96/93,618.40
  6. Step 6: Final answer
    x = 138,089.35

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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.