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Finding the Fourth Proportional to 152,172.65, 210,065.52 and 90,940.45

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Solution

The fourth proportional to 152,172.65, 210,065.52 and 90,940.45 is: 125,538.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,172.65 : 210,065.52 = 90,940.45 : x
  2. Step 2: Convert to fraction form
    152,172.65/210,065.52 = 90,940.45/x
  3. Step 3: Cross multiply
    152,172.65x = 210,065.52 × 90,940.45
  4. Step 4: Simplify right side
    152,172.65x = 19,103,452,918.28
  5. Step 5: Solve for x
    x = 19,103,452,918.28/152,172.65
  6. Step 6: Final answer
    x = 125,538.02

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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.