Home / 128,111.22-176,505.08-89,312.63

Finding the Fourth Proportional to 128,111.22, 176,505.08 and 89,312.63

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Solution

The fourth proportional to 128,111.22, 176,505.08 and 89,312.63 is: 123,050.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,111.22 : 176,505.08 = 89,312.63 : x
  2. Step 2: Convert to fraction form
    128,111.22/176,505.08 = 89,312.63/x
  3. Step 3: Cross multiply
    128,111.22x = 176,505.08 × 89,312.63
  4. Step 4: Simplify right side
    128,111.22x = 15,764,131,574.07
  5. Step 5: Solve for x
    x = 15,764,131,574.07/128,111.22
  6. Step 6: Final answer
    x = 123,050.36

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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.