Home / 158,779.13-219,114.65-86,182.02

Finding the Fourth Proportional to 158,779.13, 219,114.65 and 86,182.02

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Solution

The fourth proportional to 158,779.13, 219,114.65 and 86,182.02 is: 118,930.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,779.13 : 219,114.65 = 86,182.02 : x
  2. Step 2: Convert to fraction form
    158,779.13/219,114.65 = 86,182.02/x
  3. Step 3: Cross multiply
    158,779.13x = 219,114.65 × 86,182.02
  4. Step 4: Simplify right side
    158,779.13x = 18,883,742,717.68
  5. Step 5: Solve for x
    x = 18,883,742,717.68/158,779.13
  6. Step 6: Final answer
    x = 118,930.89

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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.