Home / 147,905,138.70-221,857,708.05-90,509,510.70

Finding the Fourth Proportional to 147,905,138.70, 221,857,708.05 and 90,509,510.70

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Solution

The fourth proportional to 147,905,138.70, 221,857,708.05 and 90,509,510.70 is: 135,764,266.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,905,138.70 : 221,857,708.05 = 90,509,510.70 : x
  2. Step 2: Convert to fraction form
    147,905,138.70/221,857,708.05 = 90,509,510.70/x
  3. Step 3: Cross multiply
    147,905,138.70x = 221,857,708.05 × 90,509,510.70
  4. Step 4: Simplify right side
    147,905,138.70x = 20,080,232,600,628,952
  5. Step 5: Solve for x
    x = 20,080,232,600,628,952/147,905,138.70
  6. Step 6: Final answer
    x = 135,764,266.05

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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.