Home / 103,428,511.30-155,142,766.95-45,859,672.90

Finding the Fourth Proportional to 103,428,511.30, 155,142,766.95 and 45,859,672.90

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Solution

The fourth proportional to 103,428,511.30, 155,142,766.95 and 45,859,672.90 is: 68,789,509.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,428,511.30 : 155,142,766.95 = 45,859,672.90 : x
  2. Step 2: Convert to fraction form
    103,428,511.30/155,142,766.95 = 45,859,672.90/x
  3. Step 3: Cross multiply
    103,428,511.30x = 155,142,766.95 × 45,859,672.90
  4. Step 4: Simplify right side
    103,428,511.30x = 7,114,796,545,127,930
  5. Step 5: Solve for x
    x = 7,114,796,545,127,930/103,428,511.30
  6. Step 6: Final answer
    x = 68,789,509.35

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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.