Home / 129,765,459.80-179,076,387.92-71,028,420.80

Finding the Fourth Proportional to 129,765,459.80, 179,076,387.92 and 71,028,420.80

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Solution

The fourth proportional to 129,765,459.80, 179,076,387.92 and 71,028,420.80 is: 98,019,249.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,765,459.80 : 179,076,387.92 = 71,028,420.80 : x
  2. Step 2: Convert to fraction form
    129,765,459.80/179,076,387.92 = 71,028,420.80/x
  3. Step 3: Cross multiply
    129,765,459.80x = 179,076,387.92 × 71,028,420.80
  4. Step 4: Simplify right side
    129,765,459.80x = 12,719,513,036,525,796
  5. Step 5: Solve for x
    x = 12,719,513,036,525,796/129,765,459.80
  6. Step 6: Final answer
    x = 98,019,249.93

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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.