Home / 105,688.26-145,851.84-57,938.76

Finding the Fourth Proportional to 105,688.26, 145,851.84 and 57,938.76

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Solution

The fourth proportional to 105,688.26, 145,851.84 and 57,938.76 is: 79,956.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,688.26 : 145,851.84 = 57,938.76 : x
  2. Step 2: Convert to fraction form
    105,688.26/145,851.84 = 57,938.76/x
  3. Step 3: Cross multiply
    105,688.26x = 145,851.84 × 57,938.76
  4. Step 4: Simplify right side
    105,688.26x = 8,450,474,753.32
  5. Step 5: Solve for x
    x = 8,450,474,753.32/105,688.26
  6. Step 6: Final answer
    x = 79,956.61

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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.