Home / 129,703.28-179,030.41-76,005.60

Finding the Fourth Proportional to 129,703.28, 179,030.41 and 76,005.60

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Solution

The fourth proportional to 129,703.28, 179,030.41 and 76,005.60 is: 104,911.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,703.28 : 179,030.41 = 76,005.60 : x
  2. Step 2: Convert to fraction form
    129,703.28/179,030.41 = 76,005.60/x
  3. Step 3: Cross multiply
    129,703.28x = 179,030.41 × 76,005.60
  4. Step 4: Simplify right side
    129,703.28x = 13,607,312,835.14
  5. Step 5: Solve for x
    x = 13,607,312,835.14/129,703.28
  6. Step 6: Final answer
    x = 104,911.09

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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.