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Finding the Fourth Proportional to 156,699.96, 216,423.99 and 105,624.60

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Solution

The fourth proportional to 156,699.96, 216,423.99 and 105,624.60 is: 145,881.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,699.96 : 216,423.99 = 105,624.60 : x
  2. Step 2: Convert to fraction form
    156,699.96/216,423.99 = 105,624.60/x
  3. Step 3: Cross multiply
    156,699.96x = 216,423.99 × 105,624.60
  4. Step 4: Simplify right side
    156,699.96x = 22,859,697,374.15
  5. Step 5: Solve for x
    x = 22,859,697,374.15/156,699.96
  6. Step 6: Final answer
    x = 145,881.96

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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.