Home / 100,323.64-138,445.86-55,001.08

Finding the Fourth Proportional to 100,323.64, 138,445.86 and 55,001.08

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Solution

The fourth proportional to 100,323.64, 138,445.86 and 55,001.08 is: 75,901.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,323.64 : 138,445.86 = 55,001.08 : x
  2. Step 2: Convert to fraction form
    100,323.64/138,445.86 = 55,001.08/x
  3. Step 3: Cross multiply
    100,323.64x = 138,445.86 × 55,001.08
  4. Step 4: Simplify right side
    100,323.64x = 7,614,671,821.53
  5. Step 5: Solve for x
    x = 7,614,671,821.53/100,323.64
  6. Step 6: Final answer
    x = 75,901.07

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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.