Home / 103,138,681.46-154,725,647.79-42,521,270.90

Finding the Fourth Proportional to 103,138,681.46, 154,725,647.79 and 42,521,270.90

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Solution

The fourth proportional to 103,138,681.46, 154,725,647.79 and 42,521,270.90 is: 63,789,172.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,138,681.46 : 154,725,647.79 = 42,521,270.90 : x
  2. Step 2: Convert to fraction form
    103,138,681.46/154,725,647.79 = 42,521,270.90/x
  3. Step 3: Cross multiply
    103,138,681.46x = 154,725,647.79 × 42,521,270.90
  4. Step 4: Simplify right side
    103,138,681.46x = 6,579,131,184,856,576
  5. Step 5: Solve for x
    x = 6,579,131,184,856,576/103,138,681.46
  6. Step 6: Final answer
    x = 63,789,172.91

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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.