Home / 180,928.28-249,710.90-100,381.74

Finding the Fourth Proportional to 180,928.28, 249,710.90 and 100,381.74

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Solution

The fourth proportional to 180,928.28, 249,710.90 and 100,381.74 is: 138,543.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,928.28 : 249,710.90 = 100,381.74 : x
  2. Step 2: Convert to fraction form
    180,928.28/249,710.90 = 100,381.74/x
  3. Step 3: Cross multiply
    180,928.28x = 249,710.90 × 100,381.74
  4. Step 4: Simplify right side
    180,928.28x = 25,066,414,638.97
  5. Step 5: Solve for x
    x = 25,066,414,638.97/180,928.28
  6. Step 6: Final answer
    x = 138,543.38

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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.