Home / 80,457,685.15-120,686,527.73-19,873,411.15

Finding the Fourth Proportional to 80,457,685.15, 120,686,527.73 and 19,873,411.15

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Solution

The fourth proportional to 80,457,685.15, 120,686,527.73 and 19,873,411.15 is: 29,810,116.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,457,685.15 : 120,686,527.73 = 19,873,411.15 : x
  2. Step 2: Convert to fraction form
    80,457,685.15/120,686,527.73 = 19,873,411.15/x
  3. Step 3: Cross multiply
    80,457,685.15x = 120,686,527.73 × 19,873,411.15
  4. Step 4: Simplify right side
    80,457,685.15x = 2,398,452,985,844,166
  5. Step 5: Solve for x
    x = 2,398,452,985,844,166/80,457,685.15
  6. Step 6: Final answer
    x = 29,810,116.73

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Double scale
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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.