Home / 130,111.05-179,553.54-72,752.45

Finding the Fourth Proportional to 130,111.05, 179,553.54 and 72,752.45

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Solution

The fourth proportional to 130,111.05, 179,553.54 and 72,752.45 is: 100,398.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,111.05 : 179,553.54 = 72,752.45 : x
  2. Step 2: Convert to fraction form
    130,111.05/179,553.54 = 72,752.45/x
  3. Step 3: Cross multiply
    130,111.05x = 179,553.54 × 72,752.45
  4. Step 4: Simplify right side
    130,111.05x = 13,062,959,043.41
  5. Step 5: Solve for x
    x = 13,062,959,043.41/130,111.05
  6. Step 6: Final answer
    x = 100,398.54

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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.