Home / 155,401.80-214,473.48-87,421.65

Finding the Fourth Proportional to 155,401.80, 214,473.48 and 87,421.65

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Solution

The fourth proportional to 155,401.80, 214,473.48 and 87,421.65 is: 120,652.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,401.80 : 214,473.48 = 87,421.65 : x
  2. Step 2: Convert to fraction form
    155,401.80/214,473.48 = 87,421.65/x
  3. Step 3: Cross multiply
    155,401.80x = 214,473.48 × 87,421.65
  4. Step 4: Simplify right side
    155,401.80x = 18,749,625,502.84
  5. Step 5: Solve for x
    x = 18,749,625,502.84/155,401.80
  6. Step 6: Final answer
    x = 120,652.56

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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.