Home / 117,221,815.16-161,795,501.55-79,608,621.41

Finding the Fourth Proportional to 117,221,815.16, 161,795,501.55 and 79,608,621.41

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Solution

The fourth proportional to 117,221,815.16, 161,795,501.55 and 79,608,621.41 is: 109,879,861.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,221,815.16 : 161,795,501.55 = 79,608,621.41 : x
  2. Step 2: Convert to fraction form
    117,221,815.16/161,795,501.55 = 79,608,621.41/x
  3. Step 3: Cross multiply
    117,221,815.16x = 161,795,501.55 × 79,608,621.41
  4. Step 4: Simplify right side
    117,221,815.16x = 12,880,316,827,926,042
  5. Step 5: Solve for x
    x = 12,880,316,827,926,042/117,221,815.16
  6. Step 6: Final answer
    x = 109,879,861.62

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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.