Home / 118,147.04-163,028.40-100,314.08

Finding the Fourth Proportional to 118,147.04, 163,028.40 and 100,314.08

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Solution

The fourth proportional to 118,147.04, 163,028.40 and 100,314.08 is: 138,421.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,147.04 : 163,028.40 = 100,314.08 : x
  2. Step 2: Convert to fraction form
    118,147.04/163,028.40 = 100,314.08/x
  3. Step 3: Cross multiply
    118,147.04x = 163,028.40 × 100,314.08
  4. Step 4: Simplify right side
    118,147.04x = 16,354,043,959.87
  5. Step 5: Solve for x
    x = 16,354,043,959.87/118,147.04
  6. Step 6: Final answer
    x = 138,421.11

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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.