Home / 125,019.21-172,519.83-68,419.65

Finding the Fourth Proportional to 125,019.21, 172,519.83 and 68,419.65

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Solution

The fourth proportional to 125,019.21, 172,519.83 and 68,419.65 is: 94,415.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,019.21 : 172,519.83 = 68,419.65 : x
  2. Step 2: Convert to fraction form
    125,019.21/172,519.83 = 68,419.65/x
  3. Step 3: Cross multiply
    125,019.21x = 172,519.83 × 68,419.65
  4. Step 4: Simplify right side
    125,019.21x = 11,803,746,386.66
  5. Step 5: Solve for x
    x = 11,803,746,386.66/125,019.21
  6. Step 6: Final answer
    x = 94,415.46

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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.