Home / 136,915.10-205,378.34-47,019.58

Finding the Fourth Proportional to 136,915.10, 205,378.34 and 47,019.58

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Solution

The fourth proportional to 136,915.10, 205,378.34 and 47,019.58 is: 70,531.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,915.10 : 205,378.34 = 47,019.58 : x
  2. Step 2: Convert to fraction form
    136,915.10/205,378.34 = 47,019.58/x
  3. Step 3: Cross multiply
    136,915.10x = 205,378.34 × 47,019.58
  4. Step 4: Simplify right side
    136,915.10x = 9,656,803,287.90
  5. Step 5: Solve for x
    x = 9,656,803,287.90/136,915.10
  6. Step 6: Final answer
    x = 70,531.32

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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.