Home / 136,965,749.02-189,005,596.14-78,216,936.64

Finding the Fourth Proportional to 136,965,749.02, 189,005,596.14 and 78,216,936.64

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Solution

The fourth proportional to 136,965,749.02, 189,005,596.14 and 78,216,936.64 is: 107,935,296.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,965,749.02 : 189,005,596.14 = 78,216,936.64 : x
  2. Step 2: Convert to fraction form
    136,965,749.02/189,005,596.14 = 78,216,936.64/x
  3. Step 3: Cross multiply
    136,965,749.02x = 189,005,596.14 × 78,216,936.64
  4. Step 4: Simplify right side
    136,965,749.02x = 14,783,438,737,887,808
  5. Step 5: Solve for x
    x = 14,783,438,737,887,808/136,965,749.02
  6. Step 6: Final answer
    x = 107,935,296.55

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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.