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Finding the Fourth Proportional to 101,915.58, 152,717.51 and 42,718.98

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Solution

The fourth proportional to 101,915.58, 152,717.51 and 42,718.98 is: 64,013.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,915.58 : 152,717.51 = 42,718.98 : x
  2. Step 2: Convert to fraction form
    101,915.58/152,717.51 = 42,718.98/x
  3. Step 3: Cross multiply
    101,915.58x = 152,717.51 × 42,718.98
  4. Step 4: Simplify right side
    101,915.58x = 6,523,936,255.34
  5. Step 5: Solve for x
    x = 6,523,936,255.34/101,915.58
  6. Step 6: Final answer
    x = 64,013.14

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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.