Home / 88,172.79-121,608.08-57,989.10

Finding the Fourth Proportional to 88,172.79, 121,608.08 and 57,989.10

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Solution

The fourth proportional to 88,172.79, 121,608.08 and 57,989.10 is: 79,978.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,172.79 : 121,608.08 = 57,989.10 : x
  2. Step 2: Convert to fraction form
    88,172.79/121,608.08 = 57,989.10/x
  3. Step 3: Cross multiply
    88,172.79x = 121,608.08 × 57,989.10
  4. Step 4: Simplify right side
    88,172.79x = 7,051,943,137.62
  5. Step 5: Solve for x
    x = 7,051,943,137.62/88,172.79
  6. Step 6: Final answer
    x = 79,978.68

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1.5x scale

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.