Home / 125,495.09-173,187.29-71,780.21

Finding the Fourth Proportional to 125,495.09, 173,187.29 and 71,780.21

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Solution

The fourth proportional to 125,495.09, 173,187.29 and 71,780.21 is: 99,059.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,495.09 : 173,187.29 = 71,780.21 : x
  2. Step 2: Convert to fraction form
    125,495.09/173,187.29 = 71,780.21/x
  3. Step 3: Cross multiply
    125,495.09x = 173,187.29 × 71,780.21
  4. Step 4: Simplify right side
    125,495.09x = 12,431,419,686.63
  5. Step 5: Solve for x
    x = 12,431,419,686.63/125,495.09
  6. Step 6: Final answer
    x = 99,059.01

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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.