Home / 201,696,812.51-278,334,252.74-112,384,142.35

Finding the Fourth Proportional to 201,696,812.51, 278,334,252.74 and 112,384,142.35

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Solution

The fourth proportional to 201,696,812.51, 278,334,252.74 and 112,384,142.35 is: 155,086,021.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,696,812.51 : 278,334,252.74 = 112,384,142.35 : x
  2. Step 2: Convert to fraction form
    201,696,812.51/278,334,252.74 = 112,384,142.35/x
  3. Step 3: Cross multiply
    201,696,812.51x = 278,334,252.74 × 112,384,142.35
  4. Step 4: Simplify right side
    201,696,812.51x = 31,280,356,280,398,164
  5. Step 5: Solve for x
    x = 31,280,356,280,398,164/201,696,812.51
  6. Step 6: Final answer
    x = 155,086,021.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.