Home / 156,410.54-215,848.09-84,790.40

Finding the Fourth Proportional to 156,410.54, 215,848.09 and 84,790.40

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Solution

The fourth proportional to 156,410.54, 215,848.09 and 84,790.40 is: 117,011.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,410.54 : 215,848.09 = 84,790.40 : x
  2. Step 2: Convert to fraction form
    156,410.54/215,848.09 = 84,790.40/x
  3. Step 3: Cross multiply
    156,410.54x = 215,848.09 × 84,790.40
  4. Step 4: Simplify right side
    156,410.54x = 18,301,844,917.08
  5. Step 5: Solve for x
    x = 18,301,844,917.08/156,410.54
  6. Step 6: Final answer
    x = 117,011.58

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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.