Home / 130,465.49-180,025.56-76,730.90

Finding the Fourth Proportional to 130,465.49, 180,025.56 and 76,730.90

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Solution

The fourth proportional to 130,465.49, 180,025.56 and 76,730.90 is: 105,878.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,465.49 : 180,025.56 = 76,730.90 : x
  2. Step 2: Convert to fraction form
    130,465.49/180,025.56 = 76,730.90/x
  3. Step 3: Cross multiply
    130,465.49x = 180,025.56 × 76,730.90
  4. Step 4: Simplify right side
    130,465.49x = 13,813,522,557.48
  5. Step 5: Solve for x
    x = 13,813,522,557.48/130,465.49
  6. Step 6: Final answer
    x = 105,878.75

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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.