Home / 211,175.07-291,422.58-115,681.53

Finding the Fourth Proportional to 211,175.07, 291,422.58 and 115,681.53

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Solution

The fourth proportional to 211,175.07, 291,422.58 and 115,681.53 is: 159,641.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,175.07 : 291,422.58 = 115,681.53 : x
  2. Step 2: Convert to fraction form
    211,175.07/291,422.58 = 115,681.53/x
  3. Step 3: Cross multiply
    211,175.07x = 291,422.58 × 115,681.53
  4. Step 4: Simplify right side
    211,175.07x = 33,712,209,930.95
  5. Step 5: Solve for x
    x = 33,712,209,930.95/211,175.07
  6. Step 6: Final answer
    x = 159,641.05

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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.