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Finding the Fourth Proportional to 145,994.40, 219,121.20 and 124,999.20

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Solution

The fourth proportional to 145,994.40, 219,121.20 and 124,999.20 is: 187,609.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,994.40 : 219,121.20 = 124,999.20 : x
  2. Step 2: Convert to fraction form
    145,994.40/219,121.20 = 124,999.20/x
  3. Step 3: Cross multiply
    145,994.40x = 219,121.20 × 124,999.20
  4. Step 4: Simplify right side
    145,994.40x = 27,389,974,703.04
  5. Step 5: Solve for x
    x = 27,389,974,703.04/145,994.40
  6. Step 6: Final answer
    x = 187,609.76

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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.