Home / 105,729.28-145,892.96-60,410.20

Finding the Fourth Proportional to 105,729.28, 145,892.96 and 60,410.20

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Solution

The fourth proportional to 105,729.28, 145,892.96 and 60,410.20 is: 83,358.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,729.28 : 145,892.96 = 60,410.20 : x
  2. Step 2: Convert to fraction form
    105,729.28/145,892.96 = 60,410.20/x
  3. Step 3: Cross multiply
    105,729.28x = 145,892.96 × 60,410.20
  4. Step 4: Simplify right side
    105,729.28x = 8,813,422,225.41
  5. Step 5: Solve for x
    x = 8,813,422,225.41/105,729.28
  6. Step 6: Final answer
    x = 83,358.39

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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.