Home / 105,600.80-145,715.28-63,143.84

Finding the Fourth Proportional to 105,600.80, 145,715.28 and 63,143.84

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Solution

The fourth proportional to 105,600.80, 145,715.28 and 63,143.84 is: 87,130.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,600.80 : 145,715.28 = 63,143.84 : x
  2. Step 2: Convert to fraction form
    105,600.80/145,715.28 = 63,143.84/x
  3. Step 3: Cross multiply
    105,600.80x = 145,715.28 × 63,143.84
  4. Step 4: Simplify right side
    105,600.80x = 9,201,022,325.88
  5. Step 5: Solve for x
    x = 9,201,022,325.88/105,600.80
  6. Step 6: Final answer
    x = 87,130.23

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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.