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Finding the Fourth Proportional to 139,765.88, 209,681.63 and 46,271.63

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Solution

The fourth proportional to 139,765.88, 209,681.63 and 46,271.63 is: 69,418.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,765.88 : 209,681.63 = 46,271.63 : x
  2. Step 2: Convert to fraction form
    139,765.88/209,681.63 = 46,271.63/x
  3. Step 3: Cross multiply
    139,765.88x = 209,681.63 × 46,271.63
  4. Step 4: Simplify right side
    139,765.88x = 9,702,309,521.39
  5. Step 5: Solve for x
    x = 9,702,309,521.39/139,765.88
  6. Step 6: Final answer
    x = 69,418.30

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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.