Home / 137,345.48-189,521.10-76,907.72

Finding the Fourth Proportional to 137,345.48, 189,521.10 and 76,907.72

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Solution

The fourth proportional to 137,345.48, 189,521.10 and 76,907.72 is: 106,123.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,345.48 : 189,521.10 = 76,907.72 : x
  2. Step 2: Convert to fraction form
    137,345.48/189,521.10 = 76,907.72/x
  3. Step 3: Cross multiply
    137,345.48x = 189,521.10 × 76,907.72
  4. Step 4: Simplify right side
    137,345.48x = 14,575,635,692.89
  5. Step 5: Solve for x
    x = 14,575,635,692.89/137,345.48
  6. Step 6: Final answer
    x = 106,123.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.