Home / 123,492.09-170,283.81-80,392.11

Finding the Fourth Proportional to 123,492.09, 170,283.81 and 80,392.11

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Solution

The fourth proportional to 123,492.09, 170,283.81 and 80,392.11 is: 110,853.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,492.09 : 170,283.81 = 80,392.11 : x
  2. Step 2: Convert to fraction form
    123,492.09/170,283.81 = 80,392.11/x
  3. Step 3: Cross multiply
    123,492.09x = 170,283.81 × 80,392.11
  4. Step 4: Simplify right side
    123,492.09x = 13,689,474,784.74
  5. Step 5: Solve for x
    x = 13,689,474,784.74/123,492.09
  6. Step 6: Final answer
    x = 110,853.05

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1.5x scale

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.