Home / 152,145.23-210,132.75-103,663.09

Finding the Fourth Proportional to 152,145.23, 210,132.75 and 103,663.09

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Solution

The fourth proportional to 152,145.23, 210,132.75 and 103,663.09 is: 143,172.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,145.23 : 210,132.75 = 103,663.09 : x
  2. Step 2: Convert to fraction form
    152,145.23/210,132.75 = 103,663.09/x
  3. Step 3: Cross multiply
    152,145.23x = 210,132.75 × 103,663.09
  4. Step 4: Simplify right side
    152,145.23x = 21,783,010,175.20
  5. Step 5: Solve for x
    x = 21,783,010,175.20/152,145.23
  6. Step 6: Final answer
    x = 143,172.48

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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.