Home / 137,442.08-189,690.16-77,016.80

Finding the Fourth Proportional to 137,442.08, 189,690.16 and 77,016.80

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Solution

The fourth proportional to 137,442.08, 189,690.16 and 77,016.80 is: 106,294.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,442.08 : 189,690.16 = 77,016.80 : x
  2. Step 2: Convert to fraction form
    137,442.08/189,690.16 = 77,016.80/x
  3. Step 3: Cross multiply
    137,442.08x = 189,690.16 × 77,016.80
  4. Step 4: Simplify right side
    137,442.08x = 14,609,329,114.69
  5. Step 5: Solve for x
    x = 14,609,329,114.69/137,442.08
  6. Step 6: Final answer
    x = 106,294.44

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1.5x scale

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.