Home / 153,941.26-212,427.75-89,381.02

Finding the Fourth Proportional to 153,941.26, 212,427.75 and 89,381.02

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Solution

The fourth proportional to 153,941.26, 212,427.75 and 89,381.02 is: 123,339.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,941.26 : 212,427.75 = 89,381.02 : x
  2. Step 2: Convert to fraction form
    153,941.26/212,427.75 = 89,381.02/x
  3. Step 3: Cross multiply
    153,941.26x = 212,427.75 × 89,381.02
  4. Step 4: Simplify right side
    153,941.26x = 18,987,008,971.31
  5. Step 5: Solve for x
    x = 18,987,008,971.31/153,941.26
  6. Step 6: Final answer
    x = 123,339.31

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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.