Home / 128,011,507.66-191,939,503.61-50,195,186.32

Finding the Fourth Proportional to 128,011,507.66, 191,939,503.61 and 50,195,186.32

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Solution

The fourth proportional to 128,011,507.66, 191,939,503.61 and 50,195,186.32 is: 75,262,289.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,011,507.66 : 191,939,503.61 = 50,195,186.32 : x
  2. Step 2: Convert to fraction form
    128,011,507.66/191,939,503.61 = 50,195,186.32/x
  3. Step 3: Cross multiply
    128,011,507.66x = 191,939,503.61 × 50,195,186.32
  4. Step 4: Simplify right side
    128,011,507.66x = 9,634,439,145,872,264
  5. Step 5: Solve for x
    x = 9,634,439,145,872,264/128,011,507.66
  6. Step 6: Final answer
    x = 75,262,289.48

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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.