Home / 155,435.90-232,825.80-138,814.70

Finding the Fourth Proportional to 155,435.90, 232,825.80 and 138,814.70

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Solution

The fourth proportional to 155,435.90, 232,825.80 and 138,814.70 is: 207,929.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,435.90 : 232,825.80 = 138,814.70 : x
  2. Step 2: Convert to fraction form
    155,435.90/232,825.80 = 138,814.70/x
  3. Step 3: Cross multiply
    155,435.90x = 232,825.80 × 138,814.70
  4. Step 4: Simplify right side
    155,435.90x = 32,319,643,579.26
  5. Step 5: Solve for x
    x = 32,319,643,579.26/155,435.90
  6. Step 6: Final answer
    x = 207,929.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.