Home / 137,309.92-189,478.52-76,870.36

Finding the Fourth Proportional to 137,309.92, 189,478.52 and 76,870.36

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Solution

The fourth proportional to 137,309.92, 189,478.52 and 76,870.36 is: 106,075.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,309.92 : 189,478.52 = 76,870.36 : x
  2. Step 2: Convert to fraction form
    137,309.92/189,478.52 = 76,870.36/x
  3. Step 3: Cross multiply
    137,309.92x = 189,478.52 × 76,870.36
  4. Step 4: Simplify right side
    137,309.92x = 14,565,282,044.67
  5. Step 5: Solve for x
    x = 14,565,282,044.67/137,309.92
  6. Step 6: Final answer
    x = 106,075.96

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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.