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Finding the Fourth Proportional to 156,630.30, 234,945.45 and 77,898.30

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Solution

The fourth proportional to 156,630.30, 234,945.45 and 77,898.30 is: 116,847.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,630.30 : 234,945.45 = 77,898.30 : x
  2. Step 2: Convert to fraction form
    156,630.30/234,945.45 = 77,898.30/x
  3. Step 3: Cross multiply
    156,630.30x = 234,945.45 × 77,898.30
  4. Step 4: Simplify right side
    156,630.30x = 18,301,851,147.74
  5. Step 5: Solve for x
    x = 18,301,851,147.74/156,630.30
  6. Step 6: Final answer
    x = 116,847.45

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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.