Home / 131,805.10-197,707.65-100,312.30

Finding the Fourth Proportional to 131,805.10, 197,707.65 and 100,312.30

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Solution

The fourth proportional to 131,805.10, 197,707.65 and 100,312.30 is: 150,468.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,805.10 : 197,707.65 = 100,312.30 : x
  2. Step 2: Convert to fraction form
    131,805.10/197,707.65 = 100,312.30/x
  3. Step 3: Cross multiply
    131,805.10x = 197,707.65 × 100,312.30
  4. Step 4: Simplify right side
    131,805.10x = 19,832,509,099.10
  5. Step 5: Solve for x
    x = 19,832,509,099.10/131,805.10
  6. Step 6: Final answer
    x = 150,468.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.