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Finding the Fourth Proportional to 133,303.81, 199,915.35 and 70,089.88

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Solution

The fourth proportional to 133,303.81, 199,915.35 and 70,089.88 is: 105,113.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,303.81 : 199,915.35 = 70,089.88 : x
  2. Step 2: Convert to fraction form
    133,303.81/199,915.35 = 70,089.88/x
  3. Step 3: Cross multiply
    133,303.81x = 199,915.35 × 70,089.88
  4. Step 4: Simplify right side
    133,303.81x = 14,012,042,891.66
  5. Step 5: Solve for x
    x = 14,012,042,891.66/133,303.81
  6. Step 6: Final answer
    x = 105,113.60

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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.