Home / 100,430.68-138,594.24-55,108.92

Finding the Fourth Proportional to 100,430.68, 138,594.24 and 55,108.92

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Solution

The fourth proportional to 100,430.68, 138,594.24 and 55,108.92 is: 76,050.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,430.68 : 138,594.24 = 55,108.92 : x
  2. Step 2: Convert to fraction form
    100,430.68/138,594.24 = 55,108.92/x
  3. Step 3: Cross multiply
    100,430.68x = 138,594.24 × 55,108.92
  4. Step 4: Simplify right side
    100,430.68x = 7,637,778,884.62
  5. Step 5: Solve for x
    x = 7,637,778,884.62/100,430.68
  6. Step 6: Final answer
    x = 76,050.26

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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.