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Finding the Fourth Proportional to 156,057.63, 215,359.53 and 84,437.64

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Solution

The fourth proportional to 156,057.63, 215,359.53 and 84,437.64 is: 116,523.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,057.63 : 215,359.53 = 84,437.64 : x
  2. Step 2: Convert to fraction form
    156,057.63/215,359.53 = 84,437.64/x
  3. Step 3: Cross multiply
    156,057.63x = 215,359.53 × 84,437.64
  4. Step 4: Simplify right side
    156,057.63x = 18,184,450,464.71
  5. Step 5: Solve for x
    x = 18,184,450,464.71/156,057.63
  6. Step 6: Final answer
    x = 116,523.94

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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.