Home / 132,856,409.90-199,368,595.65-78,268,889.90

Finding the Fourth Proportional to 132,856,409.90, 199,368,595.65 and 78,268,889.90

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Solution

The fourth proportional to 132,856,409.90, 199,368,595.65 and 78,268,889.90 is: 117,452,809.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,856,409.90 : 199,368,595.65 = 78,268,889.90 : x
  2. Step 2: Convert to fraction form
    132,856,409.90/199,368,595.65 = 78,268,889.90/x
  3. Step 3: Cross multiply
    132,856,409.90x = 199,368,595.65 × 78,268,889.90
  4. Step 4: Simplify right side
    132,856,409.90x = 15,604,358,662,447,470
  5. Step 5: Solve for x
    x = 15,604,358,662,447,470/132,856,409.90
  6. Step 6: Final answer
    x = 117,452,809.95

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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.