Home / 105,607.26-145,657.98-67,378.50

Finding the Fourth Proportional to 105,607.26, 145,657.98 and 67,378.50

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Solution

The fourth proportional to 105,607.26, 145,657.98 and 67,378.50 is: 92,931.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,607.26 : 145,657.98 = 67,378.50 : x
  2. Step 2: Convert to fraction form
    105,607.26/145,657.98 = 67,378.50/x
  3. Step 3: Cross multiply
    105,607.26x = 145,657.98 × 67,378.50
  4. Step 4: Simplify right side
    105,607.26x = 9,814,216,205.43
  5. Step 5: Solve for x
    x = 9,814,216,205.43/105,607.26
  6. Step 6: Final answer
    x = 92,931.26

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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.