Home / 130,776.12-179,291.88-128,414.16

Finding the Fourth Proportional to 130,776.12, 179,291.88 and 128,414.16

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Solution

The fourth proportional to 130,776.12, 179,291.88 and 128,414.16 is: 176,053.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,776.12 : 179,291.88 = 128,414.16 : x
  2. Step 2: Convert to fraction form
    130,776.12/179,291.88 = 128,414.16/x
  3. Step 3: Cross multiply
    130,776.12x = 179,291.88 × 128,414.16
  4. Step 4: Simplify right side
    130,776.12x = 23,023,616,165.02
  5. Step 5: Solve for x
    x = 23,023,616,165.02/130,776.12
  6. Step 6: Final answer
    x = 176,053.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.