Home / 120,302.05-180,453.08-86,476.45

Finding the Fourth Proportional to 120,302.05, 180,453.08 and 86,476.45

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Solution

The fourth proportional to 120,302.05, 180,453.08 and 86,476.45 is: 129,714.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,302.05 : 180,453.08 = 86,476.45 : x
  2. Step 2: Convert to fraction form
    120,302.05/180,453.08 = 86,476.45/x
  3. Step 3: Cross multiply
    120,302.05x = 180,453.08 × 86,476.45
  4. Step 4: Simplify right side
    120,302.05x = 15,604,941,317.58
  5. Step 5: Solve for x
    x = 15,604,941,317.58/120,302.05
  6. Step 6: Final answer
    x = 129,714.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.