Home / 180,991.08-249,767.40-100,430.88

Finding the Fourth Proportional to 180,991.08, 249,767.40 and 100,430.88

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Solution

The fourth proportional to 180,991.08, 249,767.40 and 100,430.88 is: 138,594.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,991.08 : 249,767.40 = 100,430.88 : x
  2. Step 2: Convert to fraction form
    180,991.08/249,767.40 = 100,430.88/x
  3. Step 3: Cross multiply
    180,991.08x = 249,767.40 × 100,430.88
  4. Step 4: Simplify right side
    180,991.08x = 25,084,359,777.31
  5. Step 5: Solve for x
    x = 25,084,359,777.31/180,991.08
  6. Step 6: Final answer
    x = 138,594.45

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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.