Home / 155,530.83-214,636.56-87,550.23

Finding the Fourth Proportional to 155,530.83, 214,636.56 and 87,550.23

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Solution

The fourth proportional to 155,530.83, 214,636.56 and 87,550.23 is: 120,821.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,530.83 : 214,636.56 = 87,550.23 : x
  2. Step 2: Convert to fraction form
    155,530.83/214,636.56 = 87,550.23/x
  3. Step 3: Cross multiply
    155,530.83x = 214,636.56 × 87,550.23
  4. Step 4: Simplify right side
    155,530.83x = 18,791,480,642.53
  5. Step 5: Solve for x
    x = 18,791,480,642.53/155,530.83
  6. Step 6: Final answer
    x = 120,821.58

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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.