Home / 130,745,711.67-180,437,242.33-72,008,361.21

Finding the Fourth Proportional to 130,745,711.67, 180,437,242.33 and 72,008,361.21

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Solution

The fourth proportional to 130,745,711.67, 180,437,242.33 and 72,008,361.21 is: 99,376,032.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,745,711.67 : 180,437,242.33 = 72,008,361.21 : x
  2. Step 2: Convert to fraction form
    130,745,711.67/180,437,242.33 = 72,008,361.21/x
  3. Step 3: Cross multiply
    130,745,711.67x = 180,437,242.33 × 72,008,361.21
  4. Step 4: Simplify right side
    130,745,711.67x = 12,992,990,121,434,942
  5. Step 5: Solve for x
    x = 12,992,990,121,434,942/130,745,711.67
  6. Step 6: Final answer
    x = 99,376,032.72

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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.