Home / 126,018,051.30-189,027,076.95-45,228,521.70

Finding the Fourth Proportional to 126,018,051.30, 189,027,076.95 and 45,228,521.70

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Solution

The fourth proportional to 126,018,051.30, 189,027,076.95 and 45,228,521.70 is: 67,842,782.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,018,051.30 : 189,027,076.95 = 45,228,521.70 : x
  2. Step 2: Convert to fraction form
    126,018,051.30/189,027,076.95 = 45,228,521.70/x
  3. Step 3: Cross multiply
    126,018,051.30x = 189,027,076.95 × 45,228,521.70
  4. Step 4: Simplify right side
    126,018,051.30x = 8,549,415,251,720,645
  5. Step 5: Solve for x
    x = 8,549,415,251,720,645/126,018,051.30
  6. Step 6: Final answer
    x = 67,842,782.55

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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.