Home / 128,015.28-176,632.80-74,269.16

Finding the Fourth Proportional to 128,015.28, 176,632.80 and 74,269.16

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Solution

The fourth proportional to 128,015.28, 176,632.80 and 74,269.16 is: 102,475.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,015.28 : 176,632.80 = 74,269.16 : x
  2. Step 2: Convert to fraction form
    128,015.28/176,632.80 = 74,269.16/x
  3. Step 3: Cross multiply
    128,015.28x = 176,632.80 × 74,269.16
  4. Step 4: Simplify right side
    128,015.28x = 13,118,369,684.45
  5. Step 5: Solve for x
    x = 13,118,369,684.45/128,015.28
  6. Step 6: Final answer
    x = 102,475.03

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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.