Home / 103,962.34-143,457.26-76,752.90

Finding the Fourth Proportional to 103,962.34, 143,457.26 and 76,752.90

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Solution

The fourth proportional to 103,962.34, 143,457.26 and 76,752.90 is: 105,911.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,962.34 : 143,457.26 = 76,752.90 : x
  2. Step 2: Convert to fraction form
    103,962.34/143,457.26 = 76,752.90/x
  3. Step 3: Cross multiply
    103,962.34x = 143,457.26 × 76,752.90
  4. Step 4: Simplify right side
    103,962.34x = 11,010,760,779.02
  5. Step 5: Solve for x
    x = 11,010,760,779.02/103,962.34
  6. Step 6: Final answer
    x = 105,911.06

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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.