Home / 152,918.61-210,782.19-103,844.80

Finding the Fourth Proportional to 152,918.61, 210,782.19 and 103,844.80

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Solution

The fourth proportional to 152,918.61, 210,782.19 and 103,844.80 is: 143,139.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,918.61 : 210,782.19 = 103,844.80 : x
  2. Step 2: Convert to fraction form
    152,918.61/210,782.19 = 103,844.80/x
  3. Step 3: Cross multiply
    152,918.61x = 210,782.19 × 103,844.80
  4. Step 4: Simplify right side
    152,918.61x = 21,888,634,364.11
  5. Step 5: Solve for x
    x = 21,888,634,364.11/152,918.61
  6. Step 6: Final answer
    x = 143,139.11

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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.