Home / 155,595.85-214,749.16-90,175.55

Finding the Fourth Proportional to 155,595.85, 214,749.16 and 90,175.55

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Solution

The fourth proportional to 155,595.85, 214,749.16 and 90,175.55 is: 124,457.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,595.85 : 214,749.16 = 90,175.55 : x
  2. Step 2: Convert to fraction form
    155,595.85/214,749.16 = 90,175.55/x
  3. Step 3: Cross multiply
    155,595.85x = 214,749.16 × 90,175.55
  4. Step 4: Simplify right side
    155,595.85x = 19,365,122,315.85
  5. Step 5: Solve for x
    x = 19,365,122,315.85/155,595.85
  6. Step 6: Final answer
    x = 124,457.84

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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.