Home / 130,970.28-180,760.72-77,268.48

Finding the Fourth Proportional to 130,970.28, 180,760.72 and 77,268.48

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Solution

The fourth proportional to 130,970.28, 180,760.72 and 77,268.48 is: 106,643.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,970.28 : 180,760.72 = 77,268.48 : x
  2. Step 2: Convert to fraction form
    130,970.28/180,760.72 = 77,268.48/x
  3. Step 3: Cross multiply
    130,970.28x = 180,760.72 × 77,268.48
  4. Step 4: Simplify right side
    130,970.28x = 13,967,106,078.11
  5. Step 5: Solve for x
    x = 13,967,106,078.11/130,970.28
  6. Step 6: Final answer
    x = 106,643.32

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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.