Home / 105,318.80-145,256.28-79,563.23

Finding the Fourth Proportional to 105,318.80, 145,256.28 and 79,563.23

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Solution

The fourth proportional to 105,318.80, 145,256.28 and 79,563.23 is: 109,734.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,318.80 : 145,256.28 = 79,563.23 : x
  2. Step 2: Convert to fraction form
    105,318.80/145,256.28 = 79,563.23/x
  3. Step 3: Cross multiply
    105,318.80x = 145,256.28 × 79,563.23
  4. Step 4: Simplify right side
    105,318.80x = 11,557,058,088.30
  5. Step 5: Solve for x
    x = 11,557,058,088.30/105,318.80
  6. Step 6: Final answer
    x = 109,734.05

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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.