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Finding the Fourth Proportional to 173,865,940.80, 260,500,312.80 and 91,863,355.20

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Solution

The fourth proportional to 173,865,940.80, 260,500,312.80 and 91,863,355.20 is: 137,637,266.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,865,940.80 : 260,500,312.80 = 91,863,355.20 : x
  2. Step 2: Convert to fraction form
    173,865,940.80/260,500,312.80 = 91,863,355.20/x
  3. Step 3: Cross multiply
    173,865,940.80x = 260,500,312.80 × 91,863,355.20
  4. Step 4: Simplify right side
    173,865,940.80x = 23,930,432,764,457,508
  5. Step 5: Solve for x
    x = 23,930,432,764,457,508/173,865,940.80
  6. Step 6: Final answer
    x = 137,637,266.13

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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.