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Finding the Fourth Proportional to 140,603.80, 210,905.70 and 45,833.80

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Solution

The fourth proportional to 140,603.80, 210,905.70 and 45,833.80 is: 68,750.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,603.80 : 210,905.70 = 45,833.80 : x
  2. Step 2: Convert to fraction form
    140,603.80/210,905.70 = 45,833.80/x
  3. Step 3: Cross multiply
    140,603.80x = 210,905.70 × 45,833.80
  4. Step 4: Simplify right side
    140,603.80x = 9,666,609,672.66
  5. Step 5: Solve for x
    x = 9,666,609,672.66/140,603.80
  6. Step 6: Final answer
    x = 68,750.70

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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.