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Finding the Fourth Proportional to 140,527.08, 210,790.98 and 57,421.08

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Solution

The fourth proportional to 140,527.08, 210,790.98 and 57,421.08 is: 86,131.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,527.08 : 210,790.98 = 57,421.08 : x
  2. Step 2: Convert to fraction form
    140,527.08/210,790.98 = 57,421.08/x
  3. Step 3: Cross multiply
    140,527.08x = 210,790.98 × 57,421.08
  4. Step 4: Simplify right side
    140,527.08x = 12,103,845,725.86
  5. Step 5: Solve for x
    x = 12,103,845,725.86/140,527.08
  6. Step 6: Final answer
    x = 86,131.77

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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.