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Finding the Fourth Proportional to 118,897.70, 178,419.02 and 47,807.01

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Solution

The fourth proportional to 118,897.70, 178,419.02 and 47,807.01 is: 71,739.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,897.70 : 178,419.02 = 47,807.01 : x
  2. Step 2: Convert to fraction form
    118,897.70/178,419.02 = 47,807.01/x
  3. Step 3: Cross multiply
    118,897.70x = 178,419.02 × 47,807.01
  4. Step 4: Simplify right side
    118,897.70x = 8,529,679,634.30
  5. Step 5: Solve for x
    x = 8,529,679,634.30/118,897.70
  6. Step 6: Final answer
    x = 71,739.65

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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.