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Finding the Fourth Proportional to 105,653.76, 145,800.96 and 57,254.72

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Solution

The fourth proportional to 105,653.76, 145,800.96 and 57,254.72 is: 79,010.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,653.76 : 145,800.96 = 57,254.72 : x
  2. Step 2: Convert to fraction form
    105,653.76/145,800.96 = 57,254.72/x
  3. Step 3: Cross multiply
    105,653.76x = 145,800.96 × 57,254.72
  4. Step 4: Simplify right side
    105,653.76x = 8,347,793,140.53
  5. Step 5: Solve for x
    x = 8,347,793,140.53/105,653.76
  6. Step 6: Final answer
    x = 79,010.85

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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.