Home / 154,971,615.68-213,860,823-85,356,998.48

Finding the Fourth Proportional to 154,971,615.68, 213,860,823 and 85,356,998.48

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Solution

The fourth proportional to 154,971,615.68, 213,860,823 and 85,356,998.48 is: 117,792,654.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,971,615.68 : 213,860,823 = 85,356,998.48 : x
  2. Step 2: Convert to fraction form
    154,971,615.68/213,860,823 = 85,356,998.48/x
  3. Step 3: Cross multiply
    154,971,615.68x = 213,860,823 × 85,356,998.48
  4. Step 4: Simplify right side
    154,971,615.68x = 18,254,517,943,742,548
  5. Step 5: Solve for x
    x = 18,254,517,943,742,548/154,971,615.68
  6. Step 6: Final answer
    x = 117,792,654.25

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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.