Home / 124,779.36-171,903.60-86,986.08

Finding the Fourth Proportional to 124,779.36, 171,903.60 and 86,986.08

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Solution

The fourth proportional to 124,779.36, 171,903.60 and 86,986.08 is: 119,837.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,779.36 : 171,903.60 = 86,986.08 : x
  2. Step 2: Convert to fraction form
    124,779.36/171,903.60 = 86,986.08/x
  3. Step 3: Cross multiply
    124,779.36x = 171,903.60 × 86,986.08
  4. Step 4: Simplify right side
    124,779.36x = 14,953,220,301.89
  5. Step 5: Solve for x
    x = 14,953,220,301.89/124,779.36
  6. Step 6: Final answer
    x = 119,837.29

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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.