Home / 118,739.36-163,875.48-68,438.72

Finding the Fourth Proportional to 118,739.36, 163,875.48 and 68,438.72

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Solution

The fourth proportional to 118,739.36, 163,875.48 and 68,438.72 is: 94,454.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,739.36 : 163,875.48 = 68,438.72 : x
  2. Step 2: Convert to fraction form
    118,739.36/163,875.48 = 68,438.72/x
  3. Step 3: Cross multiply
    118,739.36x = 163,875.48 × 68,438.72
  4. Step 4: Simplify right side
    118,739.36x = 11,215,428,090.59
  5. Step 5: Solve for x
    x = 11,215,428,090.59/118,739.36
  6. Step 6: Final answer
    x = 94,454.17

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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.