Home / 125,455.49-173,161.76-77,681.69

Finding the Fourth Proportional to 125,455.49, 173,161.76 and 77,681.69

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Solution

The fourth proportional to 125,455.49, 173,161.76 and 77,681.69 is: 107,221.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,455.49 : 173,161.76 = 77,681.69 : x
  2. Step 2: Convert to fraction form
    125,455.49/173,161.76 = 77,681.69/x
  3. Step 3: Cross multiply
    125,455.49x = 173,161.76 × 77,681.69
  4. Step 4: Simplify right side
    125,455.49x = 13,451,496,905.96
  5. Step 5: Solve for x
    x = 13,451,496,905.96/125,455.49
  6. Step 6: Final answer
    x = 107,221.27

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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.