Home / 161,696,981.40-242,555,969.70-85,169,477.40

Finding the Fourth Proportional to 161,696,981.40, 242,555,969.70 and 85,169,477.40

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Solution

The fourth proportional to 161,696,981.40, 242,555,969.70 and 85,169,477.40 is: 127,759,745.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,696,981.40 : 242,555,969.70 = 85,169,477.40 : x
  2. Step 2: Convert to fraction form
    161,696,981.40/242,555,969.70 = 85,169,477.40/x
  3. Step 3: Cross multiply
    161,696,981.40x = 242,555,969.70 × 85,169,477.40
  4. Step 4: Simplify right side
    161,696,981.40x = 20,658,365,179,599,236
  5. Step 5: Solve for x
    x = 20,658,365,179,599,236/161,696,981.40
  6. Step 6: Final answer
    x = 127,759,745.42

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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.