Home / 152,421.14-210,340.50-87,890.06

Finding the Fourth Proportional to 152,421.14, 210,340.50 and 87,890.06

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Solution

The fourth proportional to 152,421.14, 210,340.50 and 87,890.06 is: 121,287.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,421.14 : 210,340.50 = 87,890.06 : x
  2. Step 2: Convert to fraction form
    152,421.14/210,340.50 = 87,890.06/x
  3. Step 3: Cross multiply
    152,421.14x = 210,340.50 × 87,890.06
  4. Step 4: Simplify right side
    152,421.14x = 18,486,839,361.69
  5. Step 5: Solve for x
    x = 18,486,839,361.69/152,421.14
  6. Step 6: Final answer
    x = 121,287.89

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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.