Home / 209,139.39-288,588.90-118,475.94

Finding the Fourth Proportional to 209,139.39, 288,588.90 and 118,475.94

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Solution

The fourth proportional to 209,139.39, 288,588.90 and 118,475.94 is: 163,483.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,139.39 : 288,588.90 = 118,475.94 : x
  2. Step 2: Convert to fraction form
    209,139.39/288,588.90 = 118,475.94/x
  3. Step 3: Cross multiply
    209,139.39x = 288,588.90 × 118,475.94
  4. Step 4: Simplify right side
    209,139.39x = 34,190,841,201.07
  5. Step 5: Solve for x
    x = 34,190,841,201.07/209,139.39
  6. Step 6: Final answer
    x = 163,483.51

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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.