Home / 209,148.12-313,545.87-90,730.17

Finding the Fourth Proportional to 209,148.12, 313,545.87 and 90,730.17

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Solution

The fourth proportional to 209,148.12, 313,545.87 and 90,730.17 is: 136,018.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,148.12 : 313,545.87 = 90,730.17 : x
  2. Step 2: Convert to fraction form
    209,148.12/313,545.87 = 90,730.17/x
  3. Step 3: Cross multiply
    209,148.12x = 313,545.87 × 90,730.17
  4. Step 4: Simplify right side
    209,148.12x = 28,448,070,087.90
  5. Step 5: Solve for x
    x = 28,448,070,087.90/209,148.12
  6. Step 6: Final answer
    x = 136,018.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.