Home / 130,521.76-180,155.52-76,824.08

Finding the Fourth Proportional to 130,521.76, 180,155.52 and 76,824.08

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Solution

The fourth proportional to 130,521.76, 180,155.52 and 76,824.08 is: 106,038.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,521.76 : 180,155.52 = 76,824.08 : x
  2. Step 2: Convert to fraction form
    130,521.76/180,155.52 = 76,824.08/x
  3. Step 3: Cross multiply
    130,521.76x = 180,155.52 × 76,824.08
  4. Step 4: Simplify right side
    130,521.76x = 13,840,282,080.92
  5. Step 5: Solve for x
    x = 13,840,282,080.92/130,521.76
  6. Step 6: Final answer
    x = 106,038.12

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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.