Home / 130,435.60-180,043.88-76,717.84

Finding the Fourth Proportional to 130,435.60, 180,043.88 and 76,717.84

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Solution

The fourth proportional to 130,435.60, 180,043.88 and 76,717.84 is: 105,895.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,435.60 : 180,043.88 = 76,717.84 : x
  2. Step 2: Convert to fraction form
    130,435.60/180,043.88 = 76,717.84/x
  3. Step 3: Cross multiply
    130,435.60x = 180,043.88 × 76,717.84
  4. Step 4: Simplify right side
    130,435.60x = 13,812,577,578.82
  5. Step 5: Solve for x
    x = 13,812,577,578.82/130,435.60
  6. Step 6: Final answer
    x = 105,895.76

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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.