Home / 111,549,072.12-153,775,477.60-77,954,251.40

Finding the Fourth Proportional to 111,549,072.12, 153,775,477.60 and 77,954,251.40

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Solution

The fourth proportional to 111,549,072.12, 153,775,477.60 and 77,954,251.40 is: 107,463,486.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,549,072.12 : 153,775,477.60 = 77,954,251.40 : x
  2. Step 2: Convert to fraction form
    111,549,072.12/153,775,477.60 = 77,954,251.40/x
  3. Step 3: Cross multiply
    111,549,072.12x = 153,775,477.60 × 77,954,251.40
  4. Step 4: Simplify right side
    111,549,072.12x = 11,987,452,239,985,470
  5. Step 5: Solve for x
    x = 11,987,452,239,985,470/111,549,072.12
  6. Step 6: Final answer
    x = 107,463,486.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.