Home / 136,158,436.37-187,872,944.06-81,159,410.45

Finding the Fourth Proportional to 136,158,436.37, 187,872,944.06 and 81,159,410.45

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Solution

The fourth proportional to 136,158,436.37, 187,872,944.06 and 81,159,410.45 is: 111,984,668.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,158,436.37 : 187,872,944.06 = 81,159,410.45 : x
  2. Step 2: Convert to fraction form
    136,158,436.37/187,872,944.06 = 81,159,410.45/x
  3. Step 3: Cross multiply
    136,158,436.37x = 187,872,944.06 × 81,159,410.45
  4. Step 4: Simplify right side
    136,158,436.37x = 15,247,657,378,476,064
  5. Step 5: Solve for x
    x = 15,247,657,378,476,064/136,158,436.37
  6. Step 6: Final answer
    x = 111,984,668.64

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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.