Home / 156,392.16-215,815.40-84,770.64

Finding the Fourth Proportional to 156,392.16, 215,815.40 and 84,770.64

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Solution

The fourth proportional to 156,392.16, 215,815.40 and 84,770.64 is: 116,980.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,392.16 : 215,815.40 = 84,770.64 : x
  2. Step 2: Convert to fraction form
    156,392.16/215,815.40 = 84,770.64/x
  3. Step 3: Cross multiply
    156,392.16x = 215,815.40 × 84,770.64
  4. Step 4: Simplify right side
    156,392.16x = 18,294,809,156.00
  5. Step 5: Solve for x
    x = 18,294,809,156.00/156,392.16
  6. Step 6: Final answer
    x = 116,980.35

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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.