Home / 85,429.40-127,841.70-74,456.60

Finding the Fourth Proportional to 85,429.40, 127,841.70 and 74,456.60

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Solution

The fourth proportional to 85,429.40, 127,841.70 and 74,456.60 is: 111,421.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,429.40 : 127,841.70 = 74,456.60 : x
  2. Step 2: Convert to fraction form
    85,429.40/127,841.70 = 74,456.60/x
  3. Step 3: Cross multiply
    85,429.40x = 127,841.70 × 74,456.60
  4. Step 4: Simplify right side
    85,429.40x = 9,518,658,320.22
  5. Step 5: Solve for x
    x = 9,518,658,320.22/85,429.40
  6. Step 6: Final answer
    x = 111,421.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.