Home / 142,435,438.80-213,653,158.20-99,353,288.40

Finding the Fourth Proportional to 142,435,438.80, 213,653,158.20 and 99,353,288.40

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Solution

The fourth proportional to 142,435,438.80, 213,653,158.20 and 99,353,288.40 is: 149,029,932.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,435,438.80 : 213,653,158.20 = 99,353,288.40 : x
  2. Step 2: Convert to fraction form
    142,435,438.80/213,653,158.20 = 99,353,288.40/x
  3. Step 3: Cross multiply
    142,435,438.80x = 213,653,158.20 × 99,353,288.40
  4. Step 4: Simplify right side
    142,435,438.80x = 21,227,143,844,215,424
  5. Step 5: Solve for x
    x = 21,227,143,844,215,424/142,435,438.80
  6. Step 6: Final answer
    x = 149,029,932.60

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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.