Home / 112,882.65-155,779.86-61,900.03

Finding the Fourth Proportional to 112,882.65, 155,779.86 and 61,900.03

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Solution

The fourth proportional to 112,882.65, 155,779.86 and 61,900.03 is: 85,423.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,882.65 : 155,779.86 = 61,900.03 : x
  2. Step 2: Convert to fraction form
    112,882.65/155,779.86 = 61,900.03/x
  3. Step 3: Cross multiply
    112,882.65x = 155,779.86 × 61,900.03
  4. Step 4: Simplify right side
    112,882.65x = 9,642,778,086.06
  5. Step 5: Solve for x
    x = 9,642,778,086.06/112,882.65
  6. Step 6: Final answer
    x = 85,423.03

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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.