Home / 261,206.16-391,809.66-71,669.10

Finding the Fourth Proportional to 261,206.16, 391,809.66 and 71,669.10

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Solution

The fourth proportional to 261,206.16, 391,809.66 and 71,669.10 is: 107,503.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,206.16 : 391,809.66 = 71,669.10 : x
  2. Step 2: Convert to fraction form
    261,206.16/391,809.66 = 71,669.10/x
  3. Step 3: Cross multiply
    261,206.16x = 391,809.66 × 71,669.10
  4. Step 4: Simplify right side
    261,206.16x = 28,080,645,703.51
  5. Step 5: Solve for x
    x = 28,080,645,703.51/261,206.16
  6. Step 6: Final answer
    x = 107,503.77

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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.