Home / 128,074.35-176,740.70-70,714.36

Finding the Fourth Proportional to 128,074.35, 176,740.70 and 70,714.36

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Solution

The fourth proportional to 128,074.35, 176,740.70 and 70,714.36 is: 97,584.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,074.35 : 176,740.70 = 70,714.36 : x
  2. Step 2: Convert to fraction form
    128,074.35/176,740.70 = 70,714.36/x
  3. Step 3: Cross multiply
    128,074.35x = 176,740.70 × 70,714.36
  4. Step 4: Simplify right side
    128,074.35x = 12,498,105,486.45
  5. Step 5: Solve for x
    x = 12,498,105,486.45/128,074.35
  6. Step 6: Final answer
    x = 97,584.77

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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.