Home / 261,166.16-391,860.05-142,699.10

Finding the Fourth Proportional to 261,166.16, 391,860.05 and 142,699.10

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Solution

The fourth proportional to 261,166.16, 391,860.05 and 142,699.10 is: 214,109.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,166.16 : 391,860.05 = 142,699.10 : x
  2. Step 2: Convert to fraction form
    261,166.16/391,860.05 = 142,699.10/x
  3. Step 3: Cross multiply
    261,166.16x = 391,860.05 × 142,699.10
  4. Step 4: Simplify right side
    261,166.16x = 55,918,073,788.16
  5. Step 5: Solve for x
    x = 55,918,073,788.16/261,166.16
  6. Step 6: Final answer
    x = 214,109.19

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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.