Home / 153,417.96-211,782.30-103,146.12

Finding the Fourth Proportional to 153,417.96, 211,782.30 and 103,146.12

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Solution

The fourth proportional to 153,417.96, 211,782.30 and 103,146.12 is: 142,385.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,417.96 : 211,782.30 = 103,146.12 : x
  2. Step 2: Convert to fraction form
    153,417.96/211,782.30 = 103,146.12/x
  3. Step 3: Cross multiply
    153,417.96x = 211,782.30 × 103,146.12
  4. Step 4: Simplify right side
    153,417.96x = 21,844,522,529.68
  5. Step 5: Solve for x
    x = 21,844,522,529.68/153,417.96
  6. Step 6: Final answer
    x = 142,385.69

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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.