Home / 138,605,287.37-208,112,311.67-77,314,196.84

Finding the Fourth Proportional to 138,605,287.37, 208,112,311.67 and 77,314,196.84

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Solution

The fourth proportional to 138,605,287.37, 208,112,311.67 and 77,314,196.84 is: 116,085,299.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,605,287.37 : 208,112,311.67 = 77,314,196.84 : x
  2. Step 2: Convert to fraction form
    138,605,287.37/208,112,311.67 = 77,314,196.84/x
  3. Step 3: Cross multiply
    138,605,287.37x = 208,112,311.67 × 77,314,196.84
  4. Step 4: Simplify right side
    138,605,287.37x = 16,090,036,229,281,808
  5. Step 5: Solve for x
    x = 16,090,036,229,281,808/138,605,287.37
  6. Step 6: Final answer
    x = 116,085,299.01

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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.