Home / 128,880.02-177,450.26-117,070.22

Finding the Fourth Proportional to 128,880.02, 177,450.26 and 117,070.22

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Solution

The fourth proportional to 128,880.02, 177,450.26 and 117,070.22 is: 161,189.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,880.02 : 177,450.26 = 117,070.22 : x
  2. Step 2: Convert to fraction form
    128,880.02/177,450.26 = 117,070.22/x
  3. Step 3: Cross multiply
    128,880.02x = 177,450.26 × 117,070.22
  4. Step 4: Simplify right side
    128,880.02x = 20,774,140,977.26
  5. Step 5: Solve for x
    x = 20,774,140,977.26/128,880.02
  6. Step 6: Final answer
    x = 161,189.77

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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.