Home / 128,599.19-177,513.47-104,684.35

Finding the Fourth Proportional to 128,599.19, 177,513.47 and 104,684.35

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Solution

The fourth proportional to 128,599.19, 177,513.47 and 104,684.35 is: 144,502.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,599.19 : 177,513.47 = 104,684.35 : x
  2. Step 2: Convert to fraction form
    128,599.19/177,513.47 = 104,684.35/x
  3. Step 3: Cross multiply
    128,599.19x = 177,513.47 × 104,684.35
  4. Step 4: Simplify right side
    128,599.19x = 18,582,882,041.12
  5. Step 5: Solve for x
    x = 18,582,882,041.12/128,599.19
  6. Step 6: Final answer
    x = 144,502.32

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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.