Home / 105,099.60-145,037.85-57,354

Finding the Fourth Proportional to 105,099.60, 145,037.85 and 57,354

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Solution

The fourth proportional to 105,099.60, 145,037.85 and 57,354 is: 79,148.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,099.60 : 145,037.85 = 57,354 : x
  2. Step 2: Convert to fraction form
    105,099.60/145,037.85 = 57,354/x
  3. Step 3: Cross multiply
    105,099.60x = 145,037.85 × 57,354
  4. Step 4: Simplify right side
    105,099.60x = 8,318,500,848.90
  5. Step 5: Solve for x
    x = 8,318,500,848.90/105,099.60
  6. Step 6: Final answer
    x = 79,148.74

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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.