Home / 128,323.08-177,080.58-70,958.79

Finding the Fourth Proportional to 128,323.08, 177,080.58 and 70,958.79

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Solution

The fourth proportional to 128,323.08, 177,080.58 and 70,958.79 is: 97,920.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,323.08 : 177,080.58 = 70,958.79 : x
  2. Step 2: Convert to fraction form
    128,323.08/177,080.58 = 70,958.79/x
  3. Step 3: Cross multiply
    128,323.08x = 177,080.58 × 70,958.79
  4. Step 4: Simplify right side
    128,323.08x = 12,565,423,689.30
  5. Step 5: Solve for x
    x = 12,565,423,689.30/128,323.08
  6. Step 6: Final answer
    x = 97,920.22

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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.