Home / 205,117.37-307,712.16-70,149.71

Finding the Fourth Proportional to 205,117.37, 307,712.16 and 70,149.71

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Solution

The fourth proportional to 205,117.37, 307,712.16 and 70,149.71 is: 105,236.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,117.37 : 307,712.16 = 70,149.71 : x
  2. Step 2: Convert to fraction form
    205,117.37/307,712.16 = 70,149.71/x
  3. Step 3: Cross multiply
    205,117.37x = 307,712.16 × 70,149.71
  4. Step 4: Simplify right side
    205,117.37x = 21,585,917,248.91
  5. Step 5: Solve for x
    x = 21,585,917,248.91/205,117.37
  6. Step 6: Final answer
    x = 105,236.91

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1.5x scale

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.