Home / 130,106.11-179,447.36-111,987.66

Finding the Fourth Proportional to 130,106.11, 179,447.36 and 111,987.66

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Solution

The fourth proportional to 130,106.11, 179,447.36 and 111,987.66 is: 154,457.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,106.11 : 179,447.36 = 111,987.66 : x
  2. Step 2: Convert to fraction form
    130,106.11/179,447.36 = 111,987.66/x
  3. Step 3: Cross multiply
    130,106.11x = 179,447.36 × 111,987.66
  4. Step 4: Simplify right side
    130,106.11x = 20,095,889,939.58
  5. Step 5: Solve for x
    x = 20,095,889,939.58/130,106.11
  6. Step 6: Final answer
    x = 154,457.70

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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.