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Finding the Fourth Proportional to 156,027, 215,317.80 and 84,407.36

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Solution

The fourth proportional to 156,027, 215,317.80 and 84,407.36 is: 116,482.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,027 : 215,317.80 = 84,407.36 : x
  2. Step 2: Convert to fraction form
    156,027/215,317.80 = 84,407.36/x
  3. Step 3: Cross multiply
    156,027x = 215,317.80 × 84,407.36
  4. Step 4: Simplify right side
    156,027x = 18,174,407,059.01
  5. Step 5: Solve for x
    x = 18,174,407,059.01/156,027
  6. Step 6: Final answer
    x = 116,482.45

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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.