Home / 121,720.89-182,309.08-70,366.63

Finding the Fourth Proportional to 121,720.89, 182,309.08 and 70,366.63

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Solution

The fourth proportional to 121,720.89, 182,309.08 and 70,366.63 is: 105,392.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,720.89 : 182,309.08 = 70,366.63 : x
  2. Step 2: Convert to fraction form
    121,720.89/182,309.08 = 70,366.63/x
  3. Step 3: Cross multiply
    121,720.89x = 182,309.08 × 70,366.63
  4. Step 4: Simplify right side
    121,720.89x = 12,828,474,946.31
  5. Step 5: Solve for x
    x = 12,828,474,946.31/121,720.89
  6. Step 6: Final answer
    x = 105,392.55

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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.