Home / 87,205,606.80-130,808,410.20-85,414,016.40

Finding the Fourth Proportional to 87,205,606.80, 130,808,410.20 and 85,414,016.40

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Solution

The fourth proportional to 87,205,606.80, 130,808,410.20 and 85,414,016.40 is: 128,121,024.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,205,606.80 : 130,808,410.20 = 85,414,016.40 : x
  2. Step 2: Convert to fraction form
    87,205,606.80/130,808,410.20 = 85,414,016.40/x
  3. Step 3: Cross multiply
    87,205,606.80x = 130,808,410.20 × 85,414,016.40
  4. Step 4: Simplify right side
    87,205,606.80x = 11,172,871,694,080,728
  5. Step 5: Solve for x
    x = 11,172,871,694,080,728/87,205,606.80
  6. Step 6: Final answer
    x = 128,121,024.60

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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.