Home / 105,402.94-145,415.22-67,155.68

Finding the Fourth Proportional to 105,402.94, 145,415.22 and 67,155.68

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Solution

The fourth proportional to 105,402.94, 145,415.22 and 67,155.68 is: 92,648.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,402.94 : 145,415.22 = 67,155.68 : x
  2. Step 2: Convert to fraction form
    105,402.94/145,415.22 = 67,155.68/x
  3. Step 3: Cross multiply
    105,402.94x = 145,415.22 × 67,155.68
  4. Step 4: Simplify right side
    105,402.94x = 9,765,457,981.45
  5. Step 5: Solve for x
    x = 9,765,457,981.45/105,402.94
  6. Step 6: Final answer
    x = 92,648.82

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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.