Home / 130,231.04-179,653.88-87,715.76

Finding the Fourth Proportional to 130,231.04, 179,653.88 and 87,715.76

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Solution

The fourth proportional to 130,231.04, 179,653.88 and 87,715.76 is: 121,004.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,231.04 : 179,653.88 = 87,715.76 : x
  2. Step 2: Convert to fraction form
    130,231.04/179,653.88 = 87,715.76/x
  3. Step 3: Cross multiply
    130,231.04x = 179,653.88 × 87,715.76
  4. Step 4: Simplify right side
    130,231.04x = 15,758,476,621.15
  5. Step 5: Solve for x
    x = 15,758,476,621.15/130,231.04
  6. Step 6: Final answer
    x = 121,004.00

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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.