Home / 105,412.84-145,575.97-67,190.40

Finding the Fourth Proportional to 105,412.84, 145,575.97 and 67,190.40

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Solution

The fourth proportional to 105,412.84, 145,575.97 and 67,190.40 is: 92,790.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,412.84 : 145,575.97 = 67,190.40 : x
  2. Step 2: Convert to fraction form
    105,412.84/145,575.97 = 67,190.40/x
  3. Step 3: Cross multiply
    105,412.84x = 145,575.97 × 67,190.40
  4. Step 4: Simplify right side
    105,412.84x = 9,781,307,654.69
  5. Step 5: Solve for x
    x = 9,781,307,654.69/105,412.84
  6. Step 6: Final answer
    x = 92,790.48

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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.