Home / 113,072.34-156,007.99-72,809.40

Finding the Fourth Proportional to 113,072.34, 156,007.99 and 72,809.40

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Solution

The fourth proportional to 113,072.34, 156,007.99 and 72,809.40 is: 100,456.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,072.34 : 156,007.99 = 72,809.40 : x
  2. Step 2: Convert to fraction form
    113,072.34/156,007.99 = 72,809.40/x
  3. Step 3: Cross multiply
    113,072.34x = 156,007.99 × 72,809.40
  4. Step 4: Simplify right side
    113,072.34x = 11,358,848,147.11
  5. Step 5: Solve for x
    x = 11,358,848,147.11/113,072.34
  6. Step 6: Final answer
    x = 100,456.47

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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.