Home / 130,178.52-179,662.99-72,821.03

Finding the Fourth Proportional to 130,178.52, 179,662.99 and 72,821.03

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Solution

The fourth proportional to 130,178.52, 179,662.99 and 72,821.03 is: 100,502.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,178.52 : 179,662.99 = 72,821.03 : x
  2. Step 2: Convert to fraction form
    130,178.52/179,662.99 = 72,821.03/x
  3. Step 3: Cross multiply
    130,178.52x = 179,662.99 × 72,821.03
  4. Step 4: Simplify right side
    130,178.52x = 13,083,242,836.04
  5. Step 5: Solve for x
    x = 13,083,242,836.04/130,178.52
  6. Step 6: Final answer
    x = 100,502.32

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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.