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Finding the Fourth Proportional to 158,655.71, 236,868.57 and 121,015.01

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Solution

The fourth proportional to 158,655.71, 236,868.57 and 121,015.01 is: 180,672.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,655.71 : 236,868.57 = 121,015.01 : x
  2. Step 2: Convert to fraction form
    158,655.71/236,868.57 = 121,015.01/x
  3. Step 3: Cross multiply
    158,655.71x = 236,868.57 × 121,015.01
  4. Step 4: Simplify right side
    158,655.71x = 28,664,650,729.09
  5. Step 5: Solve for x
    x = 28,664,650,729.09/158,655.71
  6. Step 6: Final answer
    x = 180,672.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.