Home / 211,329.84-291,618.52-121,888.56

Finding the Fourth Proportional to 211,329.84, 291,618.52 and 121,888.56

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Solution

The fourth proportional to 211,329.84, 291,618.52 and 121,888.56 is: 168,196.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,329.84 : 291,618.52 = 121,888.56 : x
  2. Step 2: Convert to fraction form
    211,329.84/291,618.52 = 121,888.56/x
  3. Step 3: Cross multiply
    211,329.84x = 291,618.52 × 121,888.56
  4. Step 4: Simplify right side
    211,329.84x = 35,544,961,472.13
  5. Step 5: Solve for x
    x = 35,544,961,472.13/211,329.84
  6. Step 6: Final answer
    x = 168,196.60

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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.