Home / 153,399.07-211,756.04-103,127.23

Finding the Fourth Proportional to 153,399.07, 211,756.04 and 103,127.23

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Solution

The fourth proportional to 153,399.07, 211,756.04 and 103,127.23 is: 142,359.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,399.07 : 211,756.04 = 103,127.23 : x
  2. Step 2: Convert to fraction form
    153,399.07/211,756.04 = 103,127.23/x
  3. Step 3: Cross multiply
    153,399.07x = 211,756.04 × 103,127.23
  4. Step 4: Simplify right side
    153,399.07x = 21,837,813,840.97
  5. Step 5: Solve for x
    x = 21,837,813,840.97/153,399.07
  6. Step 6: Final answer
    x = 142,359.49

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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.