Home / 130,103.79-179,477.45-87,085.09

Finding the Fourth Proportional to 130,103.79, 179,477.45 and 87,085.09

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Solution

The fourth proportional to 130,103.79, 179,477.45 and 87,085.09 is: 120,133.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,103.79 : 179,477.45 = 87,085.09 : x
  2. Step 2: Convert to fraction form
    130,103.79/179,477.45 = 87,085.09/x
  3. Step 3: Cross multiply
    130,103.79x = 179,477.45 × 87,085.09
  4. Step 4: Simplify right side
    130,103.79x = 15,629,809,450.80
  5. Step 5: Solve for x
    x = 15,629,809,450.80/130,103.79
  6. Step 6: Final answer
    x = 120,133.40

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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.