Home / 121,908.88-168,268.07-70,931.45

Finding the Fourth Proportional to 121,908.88, 168,268.07 and 70,931.45

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Solution

The fourth proportional to 121,908.88, 168,268.07 and 70,931.45 is: 97,905.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,908.88 : 168,268.07 = 70,931.45 : x
  2. Step 2: Convert to fraction form
    121,908.88/168,268.07 = 70,931.45/x
  3. Step 3: Cross multiply
    121,908.88x = 168,268.07 × 70,931.45
  4. Step 4: Simplify right side
    121,908.88x = 11,935,498,259.81
  5. Step 5: Solve for x
    x = 11,935,498,259.81/121,908.88
  6. Step 6: Final answer
    x = 97,905.08

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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.