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Finding the Fourth Proportional to 140,070, 210,106.86 and 46,575.78

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Solution

The fourth proportional to 140,070, 210,106.86 and 46,575.78 is: 69,864.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,070 : 210,106.86 = 46,575.78 : x
  2. Step 2: Convert to fraction form
    140,070/210,106.86 = 46,575.78/x
  3. Step 3: Cross multiply
    140,070x = 210,106.86 × 46,575.78
  4. Step 4: Simplify right side
    140,070x = 9,785,890,887.85
  5. Step 5: Solve for x
    x = 9,785,890,887.85/140,070
  6. Step 6: Final answer
    x = 69,864.29

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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.