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Finding the Fourth Proportional to 156,872.48, 235,246.42 and 56,978.20

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Solution

The fourth proportional to 156,872.48, 235,246.42 and 56,978.20 is: 85,444.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,872.48 : 235,246.42 = 56,978.20 : x
  2. Step 2: Convert to fraction form
    156,872.48/235,246.42 = 56,978.20/x
  3. Step 3: Cross multiply
    156,872.48x = 235,246.42 × 56,978.20
  4. Step 4: Simplify right side
    156,872.48x = 13,403,917,568.04
  5. Step 5: Solve for x
    x = 13,403,917,568.04/156,872.48
  6. Step 6: Final answer
    x = 85,444.67

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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.