Home / 121,678.20-182,430.90-46,769.40

Finding the Fourth Proportional to 121,678.20, 182,430.90 and 46,769.40

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Solution

The fourth proportional to 121,678.20, 182,430.90 and 46,769.40 is: 70,120.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,678.20 : 182,430.90 = 46,769.40 : x
  2. Step 2: Convert to fraction form
    121,678.20/182,430.90 = 46,769.40/x
  3. Step 3: Cross multiply
    121,678.20x = 182,430.90 × 46,769.40
  4. Step 4: Simplify right side
    121,678.20x = 8,532,183,734.46
  5. Step 5: Solve for x
    x = 8,532,183,734.46/121,678.20
  6. Step 6: Final answer
    x = 70,120.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.