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Finding the Fourth Proportional to 140,590.64, 210,863.64 and 65,762.72

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Solution

The fourth proportional to 140,590.64, 210,863.64 and 65,762.72 is: 98,633.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,590.64 : 210,863.64 = 65,762.72 : x
  2. Step 2: Convert to fraction form
    140,590.64/210,863.64 = 65,762.72/x
  3. Step 3: Cross multiply
    140,590.64x = 210,863.64 × 65,762.72
  4. Step 4: Simplify right side
    140,590.64x = 13,866,966,515.50
  5. Step 5: Solve for x
    x = 13,866,966,515.50/140,590.64
  6. Step 6: Final answer
    x = 98,633.64

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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.