Home / 130,780.12-179,297.36-128,418.16

Finding the Fourth Proportional to 130,780.12, 179,297.36 and 128,418.16

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Solution

The fourth proportional to 130,780.12, 179,297.36 and 128,418.16 is: 176,059.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,780.12 : 179,297.36 = 128,418.16 : x
  2. Step 2: Convert to fraction form
    130,780.12/179,297.36 = 128,418.16/x
  3. Step 3: Cross multiply
    130,780.12x = 179,297.36 × 128,418.16
  4. Step 4: Simplify right side
    130,780.12x = 23,025,037,064.06
  5. Step 5: Solve for x
    x = 23,025,037,064.06/130,780.12
  6. Step 6: Final answer
    x = 176,059.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.