Home / 128,382,986.34-177,168,521.15-73,380,023.82

Finding the Fourth Proportional to 128,382,986.34, 177,168,521.15 and 73,380,023.82

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Solution

The fourth proportional to 128,382,986.34, 177,168,521.15 and 73,380,023.82 is: 101,264,432.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,382,986.34 : 177,168,521.15 = 73,380,023.82 : x
  2. Step 2: Convert to fraction form
    128,382,986.34/177,168,521.15 = 73,380,023.82/x
  3. Step 3: Cross multiply
    128,382,986.34x = 177,168,521.15 × 73,380,023.82
  4. Step 4: Simplify right side
    128,382,986.34x = 13,000,630,301,774,274
  5. Step 5: Solve for x
    x = 13,000,630,301,774,274/128,382,986.34
  6. Step 6: Final answer
    x = 101,264,432.87

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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.