Home / 211,159.81-291,400.59-115,669.90

Finding the Fourth Proportional to 211,159.81, 291,400.59 and 115,669.90

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Solution

The fourth proportional to 211,159.81, 291,400.59 and 115,669.90 is: 159,624.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,159.81 : 291,400.59 = 115,669.90 : x
  2. Step 2: Convert to fraction form
    211,159.81/291,400.59 = 115,669.90/x
  3. Step 3: Cross multiply
    211,159.81x = 291,400.59 × 115,669.90
  4. Step 4: Simplify right side
    211,159.81x = 33,706,277,105.24
  5. Step 5: Solve for x
    x = 33,706,277,105.24/211,159.81
  6. Step 6: Final answer
    x = 159,624.49

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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.