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Finding the Fourth Proportional to 128,897.76, 193,374.72 and 52,996.86

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Solution

The fourth proportional to 128,897.76, 193,374.72 and 52,996.86 is: 79,506.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,897.76 : 193,374.72 = 52,996.86 : x
  2. Step 2: Convert to fraction form
    128,897.76/193,374.72 = 52,996.86/x
  3. Step 3: Cross multiply
    128,897.76x = 193,374.72 × 52,996.86
  4. Step 4: Simplify right side
    128,897.76x = 10,248,252,963.38
  5. Step 5: Solve for x
    x = 10,248,252,963.38/128,897.76
  6. Step 6: Final answer
    x = 79,506.84

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1.5x scale

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.