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Finding the Fourth Proportional to 159,477,057, 220,078,494.72 and 86,138,199

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Solution

The fourth proportional to 159,477,057, 220,078,494.72 and 86,138,199 is: 118,870,798.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,477,057 : 220,078,494.72 = 86,138,199 : x
  2. Step 2: Convert to fraction form
    159,477,057/220,078,494.72 = 86,138,199/x
  3. Step 3: Cross multiply
    159,477,057x = 220,078,494.72 × 86,138,199
  4. Step 4: Simplify right side
    159,477,057x = 18,957,165,173,811,808
  5. Step 5: Solve for x
    x = 18,957,165,173,811,808/159,477,057
  6. Step 6: Final answer
    x = 118,870,798.91

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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.