Home / 100,909.13-139,254.59-58,492.26

Finding the Fourth Proportional to 100,909.13, 139,254.59 and 58,492.26

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Solution

The fourth proportional to 100,909.13, 139,254.59 and 58,492.26 is: 80,719.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,909.13 : 139,254.59 = 58,492.26 : x
  2. Step 2: Convert to fraction form
    100,909.13/139,254.59 = 58,492.26/x
  3. Step 3: Cross multiply
    100,909.13x = 139,254.59 × 58,492.26
  4. Step 4: Simplify right side
    100,909.13x = 8,145,315,830.70
  5. Step 5: Solve for x
    x = 8,145,315,830.70/100,909.13
  6. Step 6: Final answer
    x = 80,719.32

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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.