Home / 217,938,725.76-300,757,529.28-120,157,088.64

Finding the Fourth Proportional to 217,938,725.76, 300,757,529.28 and 120,157,088.64

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Solution

The fourth proportional to 217,938,725.76, 300,757,529.28 and 120,157,088.64 is: 165,817,933.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,938,725.76 : 300,757,529.28 = 120,157,088.64 : x
  2. Step 2: Convert to fraction form
    217,938,725.76/300,757,529.28 = 120,157,088.64/x
  3. Step 3: Cross multiply
    217,938,725.76x = 300,757,529.28 × 120,157,088.64
  4. Step 4: Simplify right side
    217,938,725.76x = 36,138,149,104,844,352
  5. Step 5: Solve for x
    x = 36,138,149,104,844,352/217,938,725.76
  6. Step 6: Final answer
    x = 165,817,933.36

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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.