Home / 127,800,320.40-191,700,480.60-76,656,013.20

Finding the Fourth Proportional to 127,800,320.40, 191,700,480.60 and 76,656,013.20

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Solution

The fourth proportional to 127,800,320.40, 191,700,480.60 and 76,656,013.20 is: 114,984,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,800,320.40 : 191,700,480.60 = 76,656,013.20 : x
  2. Step 2: Convert to fraction form
    127,800,320.40/191,700,480.60 = 76,656,013.20/x
  3. Step 3: Cross multiply
    127,800,320.40x = 191,700,480.60 × 76,656,013.20
  4. Step 4: Simplify right side
    127,800,320.40x = 14,694,994,571,319,944
  5. Step 5: Solve for x
    x = 14,694,994,571,319,944/127,800,320.40
  6. Step 6: Final answer
    x = 114,984,019.80

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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.