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Finding the Fourth Proportional to 103,595,884.80, 155,393,827.20 and 83,440,492.80

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Solution

The fourth proportional to 103,595,884.80, 155,393,827.20 and 83,440,492.80 is: 125,160,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,595,884.80 : 155,393,827.20 = 83,440,492.80 : x
  2. Step 2: Convert to fraction form
    103,595,884.80/155,393,827.20 = 83,440,492.80/x
  3. Step 3: Cross multiply
    103,595,884.80x = 155,393,827.20 × 83,440,492.80
  4. Step 4: Simplify right side
    103,595,884.80x = 12,966,137,519,646,042
  5. Step 5: Solve for x
    x = 12,966,137,519,646,042/103,595,884.80
  6. Step 6: Final answer
    x = 125,160,739.20

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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.