Home / 130,001.53-179,399.93-72,641.78

Finding the Fourth Proportional to 130,001.53, 179,399.93 and 72,641.78

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Solution

The fourth proportional to 130,001.53, 179,399.93 and 72,641.78 is: 100,244.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,001.53 : 179,399.93 = 72,641.78 : x
  2. Step 2: Convert to fraction form
    130,001.53/179,399.93 = 72,641.78/x
  3. Step 3: Cross multiply
    130,001.53x = 179,399.93 × 72,641.78
  4. Step 4: Simplify right side
    130,001.53x = 13,031,930,332.37
  5. Step 5: Solve for x
    x = 13,031,930,332.37/130,001.53
  6. Step 6: Final answer
    x = 100,244.44

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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.