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Finding the Fourth Proportional to 171,915.76, 257,875.36 and 51,973.68

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Solution

The fourth proportional to 171,915.76, 257,875.36 and 51,973.68 is: 77,961.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,915.76 : 257,875.36 = 51,973.68 : x
  2. Step 2: Convert to fraction form
    171,915.76/257,875.36 = 51,973.68/x
  3. Step 3: Cross multiply
    171,915.76x = 257,875.36 × 51,973.68
  4. Step 4: Simplify right side
    171,915.76x = 13,402,731,440.52
  5. Step 5: Solve for x
    x = 13,402,731,440.52/171,915.76
  6. Step 6: Final answer
    x = 77,961.04

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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.