Home / 90,086,249.04-134,470,104.78-77,388,352.08

Finding the Fourth Proportional to 90,086,249.04, 134,470,104.78 and 77,388,352.08

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Solution

The fourth proportional to 90,086,249.04, 134,470,104.78 and 77,388,352.08 is: 115,516,185.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,086,249.04 : 134,470,104.78 = 77,388,352.08 : x
  2. Step 2: Convert to fraction form
    90,086,249.04/134,470,104.78 = 77,388,352.08/x
  3. Step 3: Cross multiply
    90,086,249.04x = 134,470,104.78 × 77,388,352.08
  4. Step 4: Simplify right side
    90,086,249.04x = 10,406,419,812,949,130
  5. Step 5: Solve for x
    x = 10,406,419,812,949,130/90,086,249.04
  6. Step 6: Final answer
    x = 115,516,185.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.