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Finding the Fourth Proportional to 156,700.34, 216,257.91 and 87,795.85

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Solution

The fourth proportional to 156,700.34, 216,257.91 and 87,795.85 is: 121,164.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,700.34 : 216,257.91 = 87,795.85 : x
  2. Step 2: Convert to fraction form
    156,700.34/216,257.91 = 87,795.85/x
  3. Step 3: Cross multiply
    156,700.34x = 216,257.91 × 87,795.85
  4. Step 4: Simplify right side
    156,700.34x = 18,986,547,027.67
  5. Step 5: Solve for x
    x = 18,986,547,027.67/156,700.34
  6. Step 6: Final answer
    x = 121,164.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.