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Finding the Fourth Proportional to 157,810.60, 236,658.30 and 78,898.60

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Solution

The fourth proportional to 157,810.60, 236,658.30 and 78,898.60 is: 118,319.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,810.60 : 236,658.30 = 78,898.60 : x
  2. Step 2: Convert to fraction form
    157,810.60/236,658.30 = 78,898.60/x
  3. Step 3: Cross multiply
    157,810.60x = 236,658.30 × 78,898.60
  4. Step 4: Simplify right side
    157,810.60x = 18,672,008,548.38
  5. Step 5: Solve for x
    x = 18,672,008,548.38/157,810.60
  6. Step 6: Final answer
    x = 118,319.10

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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.