Home / 142,667,405.21-196,881,048.02-86,912,808.80

Finding the Fourth Proportional to 142,667,405.21, 196,881,048.02 and 86,912,808.80

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Solution

The fourth proportional to 142,667,405.21, 196,881,048.02 and 86,912,808.80 is: 119,939,693.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,667,405.21 : 196,881,048.02 = 86,912,808.80 : x
  2. Step 2: Convert to fraction form
    142,667,405.21/196,881,048.02 = 86,912,808.80/x
  3. Step 3: Cross multiply
    142,667,405.21x = 196,881,048.02 × 86,912,808.80
  4. Step 4: Simplify right side
    142,667,405.21x = 17,111,484,882,138,756
  5. Step 5: Solve for x
    x = 17,111,484,882,138,756/142,667,405.21
  6. Step 6: Final answer
    x = 119,939,693.70

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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.