Home / 168,507,390.40-252,761,085.60-139,785,956.80

Finding the Fourth Proportional to 168,507,390.40, 252,761,085.60 and 139,785,956.80

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Solution

The fourth proportional to 168,507,390.40, 252,761,085.60 and 139,785,956.80 is: 209,678,935.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,507,390.40 : 252,761,085.60 = 139,785,956.80 : x
  2. Step 2: Convert to fraction form
    168,507,390.40/252,761,085.60 = 139,785,956.80/x
  3. Step 3: Cross multiply
    168,507,390.40x = 252,761,085.60 × 139,785,956.80
  4. Step 4: Simplify right side
    168,507,390.40x = 35,332,450,192,402,704
  5. Step 5: Solve for x
    x = 35,332,450,192,402,704/168,507,390.40
  6. Step 6: Final answer
    x = 209,678,935.20

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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.