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Finding the Fourth Proportional to 121,359.10, 182,038.65 and 100,623.10

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Solution

The fourth proportional to 121,359.10, 182,038.65 and 100,623.10 is: 150,934.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,359.10 : 182,038.65 = 100,623.10 : x
  2. Step 2: Convert to fraction form
    121,359.10/182,038.65 = 100,623.10/x
  3. Step 3: Cross multiply
    121,359.10x = 182,038.65 × 100,623.10
  4. Step 4: Simplify right side
    121,359.10x = 18,317,293,282.82
  5. Step 5: Solve for x
    x = 18,317,293,282.82/121,359.10
  6. Step 6: Final answer
    x = 150,934.65

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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.