Home / 147,186,275.87-203,118,422.89-81,109,138.84

Finding the Fourth Proportional to 147,186,275.87, 203,118,422.89 and 81,109,138.84

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Solution

The fourth proportional to 147,186,275.87, 203,118,422.89 and 81,109,138.84 is: 111,931,362.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,186,275.87 : 203,118,422.89 = 81,109,138.84 : x
  2. Step 2: Convert to fraction form
    147,186,275.87/203,118,422.89 = 81,109,138.84/x
  3. Step 3: Cross multiply
    147,186,275.87x = 203,118,422.89 × 81,109,138.84
  4. Step 4: Simplify right side
    147,186,275.87x = 16,474,760,363,146,844
  5. Step 5: Solve for x
    x = 16,474,760,363,146,844/147,186,275.87
  6. Step 6: Final answer
    x = 111,931,362.26

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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.