Home / 105,724.80-145,901.28-60,408.72

Finding the Fourth Proportional to 105,724.80, 145,901.28 and 60,408.72

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Solution

The fourth proportional to 105,724.80, 145,901.28 and 60,408.72 is: 83,364.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,724.80 : 145,901.28 = 60,408.72 : x
  2. Step 2: Convert to fraction form
    105,724.80/145,901.28 = 60,408.72/x
  3. Step 3: Cross multiply
    105,724.80x = 145,901.28 × 60,408.72
  4. Step 4: Simplify right side
    105,724.80x = 8,813,709,571.16
  5. Step 5: Solve for x
    x = 8,813,709,571.16/105,724.80
  6. Step 6: Final answer
    x = 83,364.64

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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.