Home / 140,526.08-210,789.12-57,420

Finding the Fourth Proportional to 140,526.08, 210,789.12 and 57,420

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Solution

The fourth proportional to 140,526.08, 210,789.12 and 57,420 is: 86,130

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,526.08 : 210,789.12 = 57,420 : x
  2. Step 2: Convert to fraction form
    140,526.08/210,789.12 = 57,420/x
  3. Step 3: Cross multiply
    140,526.08x = 210,789.12 × 57,420
  4. Step 4: Simplify right side
    140,526.08x = 12,103,511,270.40
  5. Step 5: Solve for x
    x = 12,103,511,270.40/140,526.08
  6. Step 6: Final answer
    x = 86,130

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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.