Home / 90,484.08-135,726.12-28,142.16

Finding the Fourth Proportional to 90,484.08, 135,726.12 and 28,142.16

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Solution

The fourth proportional to 90,484.08, 135,726.12 and 28,142.16 is: 42,213.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,484.08 : 135,726.12 = 28,142.16 : x
  2. Step 2: Convert to fraction form
    90,484.08/135,726.12 = 28,142.16/x
  3. Step 3: Cross multiply
    90,484.08x = 135,726.12 × 28,142.16
  4. Step 4: Simplify right side
    90,484.08x = 3,819,626,185.22
  5. Step 5: Solve for x
    x = 3,819,626,185.22/90,484.08
  6. Step 6: Final answer
    x = 42,213.24

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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.