Home / 153,021.54-211,136.96-89,330.42

Finding the Fourth Proportional to 153,021.54, 211,136.96 and 89,330.42

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Solution

The fourth proportional to 153,021.54, 211,136.96 and 89,330.42 is: 123,256.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,021.54 : 211,136.96 = 89,330.42 : x
  2. Step 2: Convert to fraction form
    153,021.54/211,136.96 = 89,330.42/x
  3. Step 3: Cross multiply
    153,021.54x = 211,136.96 × 89,330.42
  4. Step 4: Simplify right side
    153,021.54x = 18,860,953,314.32
  5. Step 5: Solve for x
    x = 18,860,953,314.32/153,021.54
  6. Step 6: Final answer
    x = 123,256.85

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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.