Home / 143,341,991.38-197,828,741.64-81,471,630.16

Finding the Fourth Proportional to 143,341,991.38, 197,828,741.64 and 81,471,630.16

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Solution

The fourth proportional to 143,341,991.38, 197,828,741.64 and 81,471,630.16 is: 112,440,394.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,341,991.38 : 197,828,741.64 = 81,471,630.16 : x
  2. Step 2: Convert to fraction form
    143,341,991.38/197,828,741.64 = 81,471,630.16/x
  3. Step 3: Cross multiply
    143,341,991.38x = 197,828,741.64 × 81,471,630.16
  4. Step 4: Simplify right side
    143,341,991.38x = 16,117,430,073,912,270
  5. Step 5: Solve for x
    x = 16,117,430,073,912,270/143,341,991.38
  6. Step 6: Final answer
    x = 112,440,394.60

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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.