Home / 150,531.36-207,799.59-105,386.55

Finding the Fourth Proportional to 150,531.36, 207,799.59 and 105,386.55

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Solution

The fourth proportional to 150,531.36, 207,799.59 and 105,386.55 is: 145,479.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,531.36 : 207,799.59 = 105,386.55 : x
  2. Step 2: Convert to fraction form
    150,531.36/207,799.59 = 105,386.55/x
  3. Step 3: Cross multiply
    150,531.36x = 207,799.59 × 105,386.55
  4. Step 4: Simplify right side
    150,531.36x = 21,899,281,881.51
  5. Step 5: Solve for x
    x = 21,899,281,881.51/150,531.36
  6. Step 6: Final answer
    x = 145,479.86

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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.