Home / 105,097.10-145,037.08-57,353.53

Finding the Fourth Proportional to 105,097.10, 145,037.08 and 57,353.53

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Solution

The fourth proportional to 105,097.10, 145,037.08 and 57,353.53 is: 79,149.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,097.10 : 145,037.08 = 57,353.53 : x
  2. Step 2: Convert to fraction form
    105,097.10/145,037.08 = 57,353.53/x
  3. Step 3: Cross multiply
    105,097.10x = 145,037.08 × 57,353.53
  4. Step 4: Simplify right side
    105,097.10x = 8,318,388,518.89
  5. Step 5: Solve for x
    x = 8,318,388,518.89/105,097.10
  6. Step 6: Final answer
    x = 79,149.55

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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.