Home / 153,475.78-211,829.25-103,145.62

Finding the Fourth Proportional to 153,475.78, 211,829.25 and 103,145.62

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Solution

The fourth proportional to 153,475.78, 211,829.25 and 103,145.62 is: 142,362.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,475.78 : 211,829.25 = 103,145.62 : x
  2. Step 2: Convert to fraction form
    153,475.78/211,829.25 = 103,145.62/x
  3. Step 3: Cross multiply
    153,475.78x = 211,829.25 × 103,145.62
  4. Step 4: Simplify right side
    153,475.78x = 21,849,259,325.39
  5. Step 5: Solve for x
    x = 21,849,259,325.39/153,475.78
  6. Step 6: Final answer
    x = 142,362.91

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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.