Home / 142,378,864.80-213,568,297.20-77,657,661.60

Finding the Fourth Proportional to 142,378,864.80, 213,568,297.20 and 77,657,661.60

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Solution

The fourth proportional to 142,378,864.80, 213,568,297.20 and 77,657,661.60 is: 116,486,492.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,378,864.80 : 213,568,297.20 = 77,657,661.60 : x
  2. Step 2: Convert to fraction form
    142,378,864.80/213,568,297.20 = 77,657,661.60/x
  3. Step 3: Cross multiply
    142,378,864.80x = 213,568,297.20 × 77,657,661.60
  4. Step 4: Simplify right side
    142,378,864.80x = 16,585,214,552,445,826
  5. Step 5: Solve for x
    x = 16,585,214,552,445,826/142,378,864.80
  6. Step 6: Final answer
    x = 116,486,492.40

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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.