Home / 128,382,985.97-177,168,520.65-73,380,023.45

Finding the Fourth Proportional to 128,382,985.97, 177,168,520.65 and 73,380,023.45

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Solution

The fourth proportional to 128,382,985.97, 177,168,520.65 and 73,380,023.45 is: 101,264,432.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,382,985.97 : 177,168,520.65 = 73,380,023.45 : x
  2. Step 2: Convert to fraction form
    128,382,985.97/177,168,520.65 = 73,380,023.45/x
  3. Step 3: Cross multiply
    128,382,985.97x = 177,168,520.65 × 73,380,023.45
  4. Step 4: Simplify right side
    128,382,985.97x = 13,000,630,199,952,524
  5. Step 5: Solve for x
    x = 13,000,630,199,952,524/128,382,985.97
  6. Step 6: Final answer
    x = 101,264,432.37

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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.