Home / 154,052.72-212,386.56-138,306.32

Finding the Fourth Proportional to 154,052.72, 212,386.56 and 138,306.32

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Solution

The fourth proportional to 154,052.72, 212,386.56 and 138,306.32 is: 190,677.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,052.72 : 212,386.56 = 138,306.32 : x
  2. Step 2: Convert to fraction form
    154,052.72/212,386.56 = 138,306.32/x
  3. Step 3: Cross multiply
    154,052.72x = 212,386.56 × 138,306.32
  4. Step 4: Simplify right side
    154,052.72x = 29,374,403,531.06
  5. Step 5: Solve for x
    x = 29,374,403,531.06/154,052.72
  6. Step 6: Final answer
    x = 190,677.60

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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.