Home / 143,531,845.92-215,392,857.84-78,880,799.52

Finding the Fourth Proportional to 143,531,845.92, 215,392,857.84 and 78,880,799.52

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Solution

The fourth proportional to 143,531,845.92, 215,392,857.84 and 78,880,799.52 is: 118,373,457.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,531,845.92 : 215,392,857.84 = 78,880,799.52 : x
  2. Step 2: Convert to fraction form
    143,531,845.92/215,392,857.84 = 78,880,799.52/x
  3. Step 3: Cross multiply
    143,531,845.92x = 215,392,857.84 × 78,880,799.52
  4. Step 4: Simplify right side
    143,531,845.92x = 16,990,360,837,316,900
  5. Step 5: Solve for x
    x = 16,990,360,837,316,900/143,531,845.92
  6. Step 6: Final answer
    x = 118,373,457.32

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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.