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Finding the Fourth Proportional to 153,007.60, 211,146.26 and 85,022.82

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Solution

The fourth proportional to 153,007.60, 211,146.26 and 85,022.82 is: 117,329.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,007.60 : 211,146.26 = 85,022.82 : x
  2. Step 2: Convert to fraction form
    153,007.60/211,146.26 = 85,022.82/x
  3. Step 3: Cross multiply
    153,007.60x = 211,146.26 × 85,022.82
  4. Step 4: Simplify right side
    153,007.60x = 17,952,250,457.65
  5. Step 5: Solve for x
    x = 17,952,250,457.65/153,007.60
  6. Step 6: Final answer
    x = 117,329.14

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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.