Home / 130,653.81-180,312.58-76,949.29

Finding the Fourth Proportional to 130,653.81, 180,312.58 and 76,949.29

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Solution

The fourth proportional to 130,653.81, 180,312.58 and 76,949.29 is: 106,196.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,653.81 : 180,312.58 = 76,949.29 : x
  2. Step 2: Convert to fraction form
    130,653.81/180,312.58 = 76,949.29/x
  3. Step 3: Cross multiply
    130,653.81x = 180,312.58 × 76,949.29
  4. Step 4: Simplify right side
    130,653.81x = 13,874,925,330.65
  5. Step 5: Solve for x
    x = 13,874,925,330.65/130,653.81
  6. Step 6: Final answer
    x = 106,196.10

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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.