Home / 163,372,689-245,131,400.82-85,631,117.37

Finding the Fourth Proportional to 163,372,689, 245,131,400.82 and 85,631,117.37

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Solution

The fourth proportional to 163,372,689, 245,131,400.82 and 85,631,117.37 is: 128,484,607.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,372,689 : 245,131,400.82 = 85,631,117.37 : x
  2. Step 2: Convert to fraction form
    163,372,689/245,131,400.82 = 85,631,117.37/x
  3. Step 3: Cross multiply
    163,372,689x = 245,131,400.82 × 85,631,117.37
  4. Step 4: Simplify right side
    163,372,689x = 20,990,875,754,689,936
  5. Step 5: Solve for x
    x = 20,990,875,754,689,936/163,372,689
  6. Step 6: Final answer
    x = 128,484,607.09

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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.