Home / 90,869.13-136,309.14-28,539.63

Finding the Fourth Proportional to 90,869.13, 136,309.14 and 28,539.63

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Solution

The fourth proportional to 90,869.13, 136,309.14 and 28,539.63 is: 42,811.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,869.13 : 136,309.14 = 28,539.63 : x
  2. Step 2: Convert to fraction form
    90,869.13/136,309.14 = 28,539.63/x
  3. Step 3: Cross multiply
    90,869.13x = 136,309.14 × 28,539.63
  4. Step 4: Simplify right side
    90,869.13x = 3,890,212,421.22
  5. Step 5: Solve for x
    x = 3,890,212,421.22/90,869.13
  6. Step 6: Final answer
    x = 42,811.16

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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.