Home / 120,437.25-165,935.78-79,528.74

Finding the Fourth Proportional to 120,437.25, 165,935.78 and 79,528.74

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Solution

The fourth proportional to 120,437.25, 165,935.78 and 79,528.74 is: 109,572.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,437.25 : 165,935.78 = 79,528.74 : x
  2. Step 2: Convert to fraction form
    120,437.25/165,935.78 = 79,528.74/x
  3. Step 3: Cross multiply
    120,437.25x = 165,935.78 × 79,528.74
  4. Step 4: Simplify right side
    120,437.25x = 13,196,662,670.81
  5. Step 5: Solve for x
    x = 13,196,662,670.81/120,437.25
  6. Step 6: Final answer
    x = 109,572.93

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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.