Home / 108,871,405.80-163,307,108.70-72,591,700.20

Finding the Fourth Proportional to 108,871,405.80, 163,307,108.70 and 72,591,700.20

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Solution

The fourth proportional to 108,871,405.80, 163,307,108.70 and 72,591,700.20 is: 108,887,550.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,871,405.80 : 163,307,108.70 = 72,591,700.20 : x
  2. Step 2: Convert to fraction form
    108,871,405.80/163,307,108.70 = 72,591,700.20/x
  3. Step 3: Cross multiply
    108,871,405.80x = 163,307,108.70 × 72,591,700.20
  4. Step 4: Simplify right side
    108,871,405.80x = 11,854,740,675,279,212
  5. Step 5: Solve for x
    x = 11,854,740,675,279,212/108,871,405.80
  6. Step 6: Final answer
    x = 108,887,550.30

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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.