Home / 105,113.26-145,056.30-67,387.50

Finding the Fourth Proportional to 105,113.26, 145,056.30 and 67,387.50

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Solution

The fourth proportional to 105,113.26, 145,056.30 and 67,387.50 is: 92,994.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,113.26 : 145,056.30 = 67,387.50 : x
  2. Step 2: Convert to fraction form
    105,113.26/145,056.30 = 67,387.50/x
  3. Step 3: Cross multiply
    105,113.26x = 145,056.30 × 67,387.50
  4. Step 4: Simplify right side
    105,113.26x = 9,774,981,416.25
  5. Step 5: Solve for x
    x = 9,774,981,416.25/105,113.26
  6. Step 6: Final answer
    x = 92,994.75

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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.