Home / 100,534.08-138,726.40-58,106.08

Finding the Fourth Proportional to 100,534.08, 138,726.40 and 58,106.08

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Solution

The fourth proportional to 100,534.08, 138,726.40 and 58,106.08 is: 80,180.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,534.08 : 138,726.40 = 58,106.08 : x
  2. Step 2: Convert to fraction form
    100,534.08/138,726.40 = 58,106.08/x
  3. Step 3: Cross multiply
    100,534.08x = 138,726.40 × 58,106.08
  4. Step 4: Simplify right side
    100,534.08x = 8,060,847,296.51
  5. Step 5: Solve for x
    x = 8,060,847,296.51/100,534.08
  6. Step 6: Final answer
    x = 80,180.25

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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.