Home / 127,939,648.80-191,909,473.20-73,520,090.40

Finding the Fourth Proportional to 127,939,648.80, 191,909,473.20 and 73,520,090.40

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Solution

The fourth proportional to 127,939,648.80, 191,909,473.20 and 73,520,090.40 is: 110,280,135.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,939,648.80 : 191,909,473.20 = 73,520,090.40 : x
  2. Step 2: Convert to fraction form
    127,939,648.80/191,909,473.20 = 73,520,090.40/x
  3. Step 3: Cross multiply
    127,939,648.80x = 191,909,473.20 × 73,520,090.40
  4. Step 4: Simplify right side
    127,939,648.80x = 14,109,201,818,280,378
  5. Step 5: Solve for x
    x = 14,109,201,818,280,378/127,939,648.80
  6. Step 6: Final answer
    x = 110,280,135.60

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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.