Home / 130,140.72-179,614.56-79,169.28

Finding the Fourth Proportional to 130,140.72, 179,614.56 and 79,169.28

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Solution

The fourth proportional to 130,140.72, 179,614.56 and 79,169.28 is: 109,266.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,140.72 : 179,614.56 = 79,169.28 : x
  2. Step 2: Convert to fraction form
    130,140.72/179,614.56 = 79,169.28/x
  3. Step 3: Cross multiply
    130,140.72x = 179,614.56 × 79,169.28
  4. Step 4: Simplify right side
    130,140.72x = 14,219,955,392.72
  5. Step 5: Solve for x
    x = 14,219,955,392.72/130,140.72
  6. Step 6: Final answer
    x = 109,266.00

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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.