Home / 105,110.25-145,052.16-67,384.50

Finding the Fourth Proportional to 105,110.25, 145,052.16 and 67,384.50

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Solution

The fourth proportional to 105,110.25, 145,052.16 and 67,384.50 is: 92,990.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,110.25 : 145,052.16 = 67,384.50 : x
  2. Step 2: Convert to fraction form
    105,110.25/145,052.16 = 67,384.50/x
  3. Step 3: Cross multiply
    105,110.25x = 145,052.16 × 67,384.50
  4. Step 4: Simplify right side
    105,110.25x = 9,774,267,275.52
  5. Step 5: Solve for x
    x = 9,774,267,275.52/105,110.25
  6. Step 6: Final answer
    x = 92,990.62

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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.