Home / 128,903,212.84-177,890,100.58-70,169,665.64

Finding the Fourth Proportional to 128,903,212.84, 177,890,100.58 and 70,169,665.64

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Solution

The fourth proportional to 128,903,212.84, 177,890,100.58 and 70,169,665.64 is: 96,836,134.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,903,212.84 : 177,890,100.58 = 70,169,665.64 : x
  2. Step 2: Convert to fraction form
    128,903,212.84/177,890,100.58 = 70,169,665.64/x
  3. Step 3: Cross multiply
    128,903,212.84x = 177,890,100.58 × 70,169,665.64
  4. Step 4: Simplify right side
    128,903,212.84x = 12,482,488,878,364,572
  5. Step 5: Solve for x
    x = 12,482,488,878,364,572/128,903,212.84
  6. Step 6: Final answer
    x = 96,836,134.67

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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.