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Finding the Fourth Proportional to 140,430.30, 210,645.45 and 122,934.30

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Solution

The fourth proportional to 140,430.30, 210,645.45 and 122,934.30 is: 184,401.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,430.30 : 210,645.45 = 122,934.30 : x
  2. Step 2: Convert to fraction form
    140,430.30/210,645.45 = 122,934.30/x
  3. Step 3: Cross multiply
    140,430.30x = 210,645.45 × 122,934.30
  4. Step 4: Simplify right side
    140,430.30x = 25,895,550,943.94
  5. Step 5: Solve for x
    x = 25,895,550,943.94/140,430.30
  6. Step 6: Final answer
    x = 184,401.45

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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.