Home / 132,856,415.40-199,368,603.90-78,268,895.40

Finding the Fourth Proportional to 132,856,415.40, 199,368,603.90 and 78,268,895.40

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Solution

The fourth proportional to 132,856,415.40, 199,368,603.90 and 78,268,895.40 is: 117,452,818.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,856,415.40 : 199,368,603.90 = 78,268,895.40 : x
  2. Step 2: Convert to fraction form
    132,856,415.40/199,368,603.90 = 78,268,895.40/x
  3. Step 3: Cross multiply
    132,856,415.40x = 199,368,603.90 × 78,268,895.40
  4. Step 4: Simplify right side
    132,856,415.40x = 15,604,360,404,693,134
  5. Step 5: Solve for x
    x = 15,604,360,404,693,134/132,856,415.40
  6. Step 6: Final answer
    x = 117,452,818.20

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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.