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Finding the Fourth Proportional to 140,009.72, 210,014.15 and 34,828.70

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Solution

The fourth proportional to 140,009.72, 210,014.15 and 34,828.70 is: 52,242.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,009.72 : 210,014.15 = 34,828.70 : x
  2. Step 2: Convert to fraction form
    140,009.72/210,014.15 = 34,828.70/x
  3. Step 3: Cross multiply
    140,009.72x = 210,014.15 × 34,828.70
  4. Step 4: Simplify right side
    140,009.72x = 7,314,518,601.89
  5. Step 5: Solve for x
    x = 7,314,518,601.89/140,009.72
  6. Step 6: Final answer
    x = 52,242.94

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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.