Home / 134,568,379.28-185,704,438.16-72,688,718.40

Finding the Fourth Proportional to 134,568,379.28, 185,704,438.16 and 72,688,718.40

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Solution

The fourth proportional to 134,568,379.28, 185,704,438.16 and 72,688,718.40 is: 100,310,471.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,568,379.28 : 185,704,438.16 = 72,688,718.40 : x
  2. Step 2: Convert to fraction form
    134,568,379.28/185,704,438.16 = 72,688,718.40/x
  3. Step 3: Cross multiply
    134,568,379.28x = 185,704,438.16 × 72,688,718.40
  4. Step 4: Simplify right side
    134,568,379.28x = 13,498,617,611,042,454
  5. Step 5: Solve for x
    x = 13,498,617,611,042,454/134,568,379.28
  6. Step 6: Final answer
    x = 100,310,471.77

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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.