Home / 154,957,868.76-213,851,530.26-85,343,231.19

Finding the Fourth Proportional to 154,957,868.76, 213,851,530.26 and 85,343,231.19

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Solution

The fourth proportional to 154,957,868.76, 213,851,530.26 and 85,343,231.19 is: 117,778,985.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,957,868.76 : 213,851,530.26 = 85,343,231.19 : x
  2. Step 2: Convert to fraction form
    154,957,868.76/213,851,530.26 = 85,343,231.19/x
  3. Step 3: Cross multiply
    154,957,868.76x = 213,851,530.26 × 85,343,231.19
  4. Step 4: Simplify right side
    154,957,868.76x = 18,250,780,587,314,460
  5. Step 5: Solve for x
    x = 18,250,780,587,314,460/154,957,868.76
  6. Step 6: Final answer
    x = 117,778,985.56

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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.