Home / 130,824.84-180,513.60-77,126.70

Finding the Fourth Proportional to 130,824.84, 180,513.60 and 77,126.70

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Solution

The fourth proportional to 130,824.84, 180,513.60 and 77,126.70 is: 106,420.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,824.84 : 180,513.60 = 77,126.70 : x
  2. Step 2: Convert to fraction form
    130,824.84/180,513.60 = 77,126.70/x
  3. Step 3: Cross multiply
    130,824.84x = 180,513.60 × 77,126.70
  4. Step 4: Simplify right side
    130,824.84x = 13,922,418,273.12
  5. Step 5: Solve for x
    x = 13,922,418,273.12/130,824.84
  6. Step 6: Final answer
    x = 106,420.30

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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.