Home / 128,166.03-192,288.01-90,798.41

Finding the Fourth Proportional to 128,166.03, 192,288.01 and 90,798.41

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Solution

The fourth proportional to 128,166.03, 192,288.01 and 90,798.41 is: 136,225.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,166.03 : 192,288.01 = 90,798.41 : x
  2. Step 2: Convert to fraction form
    128,166.03/192,288.01 = 90,798.41/x
  3. Step 3: Cross multiply
    128,166.03x = 192,288.01 × 90,798.41
  4. Step 4: Simplify right side
    128,166.03x = 17,459,445,570.06
  5. Step 5: Solve for x
    x = 17,459,445,570.06/128,166.03
  6. Step 6: Final answer
    x = 136,225.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.