Home / 123,490.81-170,417.49-66,902.18

Finding the Fourth Proportional to 123,490.81, 170,417.49 and 66,902.18

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Solution

The fourth proportional to 123,490.81, 170,417.49 and 66,902.18 is: 92,325.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,490.81 : 170,417.49 = 66,902.18 : x
  2. Step 2: Convert to fraction form
    123,490.81/170,417.49 = 66,902.18/x
  3. Step 3: Cross multiply
    123,490.81x = 170,417.49 × 66,902.18
  4. Step 4: Simplify right side
    123,490.81x = 11,401,301,256.62
  5. Step 5: Solve for x
    x = 11,401,301,256.62/123,490.81
  6. Step 6: Final answer
    x = 92,325.10

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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.