Home / 85,412,150.10-128,118,225.15-84,615,887.70

Finding the Fourth Proportional to 85,412,150.10, 128,118,225.15 and 84,615,887.70

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Solution

The fourth proportional to 85,412,150.10, 128,118,225.15 and 84,615,887.70 is: 126,923,831.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,412,150.10 : 128,118,225.15 = 84,615,887.70 : x
  2. Step 2: Convert to fraction form
    85,412,150.10/128,118,225.15 = 84,615,887.70/x
  3. Step 3: Cross multiply
    85,412,150.10x = 128,118,225.15 × 84,615,887.70
  4. Step 4: Simplify right side
    85,412,150.10x = 10,840,837,351,615,716
  5. Step 5: Solve for x
    x = 10,840,837,351,615,716/85,412,150.10
  6. Step 6: Final answer
    x = 126,923,831.55

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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.