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Finding the Fourth Proportional to 153,424.96, 211,791.96 and 103,153.12

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Solution

The fourth proportional to 153,424.96, 211,791.96 and 103,153.12 is: 142,395.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,424.96 : 211,791.96 = 103,153.12 : x
  2. Step 2: Convert to fraction form
    153,424.96/211,791.96 = 103,153.12/x
  3. Step 3: Cross multiply
    153,424.96x = 211,791.96 × 103,153.12
  4. Step 4: Simplify right side
    153,424.96x = 21,847,001,464.92
  5. Step 5: Solve for x
    x = 21,847,001,464.92/153,424.96
  6. Step 6: Final answer
    x = 142,395.35

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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.