Home / 103,331,738.78-155,016,678.78-42,752,188.70

Finding the Fourth Proportional to 103,331,738.78, 155,016,678.78 and 42,752,188.70

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Solution

The fourth proportional to 103,331,738.78, 155,016,678.78 and 42,752,188.70 is: 64,136,173.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,331,738.78 : 155,016,678.78 = 42,752,188.70 : x
  2. Step 2: Convert to fraction form
    103,331,738.78/155,016,678.78 = 42,752,188.70/x
  3. Step 3: Cross multiply
    103,331,738.78x = 155,016,678.78 × 42,752,188.70
  4. Step 4: Simplify right side
    103,331,738.78x = 6,627,302,302,074,762
  5. Step 5: Solve for x
    x = 6,627,302,302,074,762/103,331,738.78
  6. Step 6: Final answer
    x = 64,136,173.27

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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.