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Finding the Fourth Proportional to 140,159.88, 210,114.78 and 51,392.64

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Solution

The fourth proportional to 140,159.88, 210,114.78 and 51,392.64 is: 77,043.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,159.88 : 210,114.78 = 51,392.64 : x
  2. Step 2: Convert to fraction form
    140,159.88/210,114.78 = 51,392.64/x
  3. Step 3: Cross multiply
    140,159.88x = 210,114.78 × 51,392.64
  4. Step 4: Simplify right side
    140,159.88x = 10,798,353,247.22
  5. Step 5: Solve for x
    x = 10,798,353,247.22/140,159.88
  6. Step 6: Final answer
    x = 77,043.11

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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.