Home / 153,401.07-211,758.80-103,129.23

Finding the Fourth Proportional to 153,401.07, 211,758.80 and 103,129.23

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Solution

The fourth proportional to 153,401.07, 211,758.80 and 103,129.23 is: 142,362.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,401.07 : 211,758.80 = 103,129.23 : x
  2. Step 2: Convert to fraction form
    153,401.07/211,758.80 = 103,129.23/x
  3. Step 3: Cross multiply
    153,401.07x = 211,758.80 × 103,129.23
  4. Step 4: Simplify right side
    153,401.07x = 21,838,521,989.72
  5. Step 5: Solve for x
    x = 21,838,521,989.72/153,401.07
  6. Step 6: Final answer
    x = 142,362.25

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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.