Home / 211,173.76-291,285.54-138,581.36

Finding the Fourth Proportional to 211,173.76, 291,285.54 and 138,581.36

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Solution

The fourth proportional to 211,173.76, 291,285.54 and 138,581.36 is: 191,154.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,173.76 : 291,285.54 = 138,581.36 : x
  2. Step 2: Convert to fraction form
    211,173.76/291,285.54 = 138,581.36/x
  3. Step 3: Cross multiply
    211,173.76x = 291,285.54 × 138,581.36
  4. Step 4: Simplify right side
    211,173.76x = 40,366,746,281.53
  5. Step 5: Solve for x
    x = 40,366,746,281.53/211,173.76
  6. Step 6: Final answer
    x = 191,154.18

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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.