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Finding the Fourth Proportional to 156,728.90, 235,093.35 and 45,920.90

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Solution

The fourth proportional to 156,728.90, 235,093.35 and 45,920.90 is: 68,881.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,728.90 : 235,093.35 = 45,920.90 : x
  2. Step 2: Convert to fraction form
    156,728.90/235,093.35 = 45,920.90/x
  3. Step 3: Cross multiply
    156,728.90x = 235,093.35 × 45,920.90
  4. Step 4: Simplify right side
    156,728.90x = 10,795,698,216.02
  5. Step 5: Solve for x
    x = 10,795,698,216.02/156,728.90
  6. Step 6: Final answer
    x = 68,881.35

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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.