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Finding the Fourth Proportional to 125,779.84, 173,457.06 and 80,472.16

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Solution

The fourth proportional to 125,779.84, 173,457.06 and 80,472.16 is: 110,975.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,779.84 : 173,457.06 = 80,472.16 : x
  2. Step 2: Convert to fraction form
    125,779.84/173,457.06 = 80,472.16/x
  3. Step 3: Cross multiply
    125,779.84x = 173,457.06 × 80,472.16
  4. Step 4: Simplify right side
    125,779.84x = 13,958,464,285.45
  5. Step 5: Solve for x
    x = 13,958,464,285.45/125,779.84
  6. Step 6: Final answer
    x = 110,975.37

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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.