Home / 123,837.30-170,892-70,127.40

Finding the Fourth Proportional to 123,837.30, 170,892 and 70,127.40

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Solution

The fourth proportional to 123,837.30, 170,892 and 70,127.40 is: 96,773.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,837.30 : 170,892 = 70,127.40 : x
  2. Step 2: Convert to fraction form
    123,837.30/170,892 = 70,127.40/x
  3. Step 3: Cross multiply
    123,837.30x = 170,892 × 70,127.40
  4. Step 4: Simplify right side
    123,837.30x = 11,984,211,640.80
  5. Step 5: Solve for x
    x = 11,984,211,640.80/123,837.30
  6. Step 6: Final answer
    x = 96,773.84

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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.