Home / 102,915.20-154,307.10-43,720.40

Finding the Fourth Proportional to 102,915.20, 154,307.10 and 43,720.40

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Solution

The fourth proportional to 102,915.20, 154,307.10 and 43,720.40 is: 65,552.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,915.20 : 154,307.10 = 43,720.40 : x
  2. Step 2: Convert to fraction form
    102,915.20/154,307.10 = 43,720.40/x
  3. Step 3: Cross multiply
    102,915.20x = 154,307.10 × 43,720.40
  4. Step 4: Simplify right side
    102,915.20x = 6,746,368,134.84
  5. Step 5: Solve for x
    x = 6,746,368,134.84/102,915.20
  6. Step 6: Final answer
    x = 65,552.69

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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.