Home / 125,132.89-187,699.35-31,638.64

Finding the Fourth Proportional to 125,132.89, 187,699.35 and 31,638.64

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Solution

The fourth proportional to 125,132.89, 187,699.35 and 31,638.64 is: 47,457.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,132.89 : 187,699.35 = 31,638.64 : x
  2. Step 2: Convert to fraction form
    125,132.89/187,699.35 = 31,638.64/x
  3. Step 3: Cross multiply
    125,132.89x = 187,699.35 × 31,638.64
  4. Step 4: Simplify right side
    125,132.89x = 5,938,552,162.88
  5. Step 5: Solve for x
    x = 5,938,552,162.88/125,132.89
  6. Step 6: Final answer
    x = 47,457.96

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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.