Home / 103,539.35-142,849.96-84,386.22

Finding the Fourth Proportional to 103,539.35, 142,849.96 and 84,386.22

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Solution

The fourth proportional to 103,539.35, 142,849.96 and 84,386.22 is: 116,424.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,539.35 : 142,849.96 = 84,386.22 : x
  2. Step 2: Convert to fraction form
    103,539.35/142,849.96 = 84,386.22/x
  3. Step 3: Cross multiply
    103,539.35x = 142,849.96 × 84,386.22
  4. Step 4: Simplify right side
    103,539.35x = 12,054,567,404.90
  5. Step 5: Solve for x
    x = 12,054,567,404.90/103,539.35
  6. Step 6: Final answer
    x = 116,424.98

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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.