Home / 130,955.76-180,719.64-76,539.60

Finding the Fourth Proportional to 130,955.76, 180,719.64 and 76,539.60

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Solution

The fourth proportional to 130,955.76, 180,719.64 and 76,539.60 is: 105,625.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,955.76 : 180,719.64 = 76,539.60 : x
  2. Step 2: Convert to fraction form
    130,955.76/180,719.64 = 76,539.60/x
  3. Step 3: Cross multiply
    130,955.76x = 180,719.64 × 76,539.60
  4. Step 4: Simplify right side
    130,955.76x = 13,832,208,957.74
  5. Step 5: Solve for x
    x = 13,832,208,957.74/130,955.76
  6. Step 6: Final answer
    x = 105,625.05

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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.