Home / 139,774,075.20-209,785,528.80-82,194,350.40

Finding the Fourth Proportional to 139,774,075.20, 209,785,528.80 and 82,194,350.40

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Solution

The fourth proportional to 139,774,075.20, 209,785,528.80 and 82,194,350.40 is: 123,364,688.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,774,075.20 : 209,785,528.80 = 82,194,350.40 : x
  2. Step 2: Convert to fraction form
    139,774,075.20/209,785,528.80 = 82,194,350.40/x
  3. Step 3: Cross multiply
    139,774,075.20x = 209,785,528.80 × 82,194,350.40
  4. Step 4: Simplify right side
    139,774,075.20x = 17,243,185,263,036,494
  5. Step 5: Solve for x
    x = 17,243,185,263,036,494/139,774,075.20
  6. Step 6: Final answer
    x = 123,364,688.61

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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.