Home / 124,681.25-172,116.75-79,421.27

Finding the Fourth Proportional to 124,681.25, 172,116.75 and 79,421.27

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Solution

The fourth proportional to 124,681.25, 172,116.75 and 79,421.27 is: 109,637.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,681.25 : 172,116.75 = 79,421.27 : x
  2. Step 2: Convert to fraction form
    124,681.25/172,116.75 = 79,421.27/x
  3. Step 3: Cross multiply
    124,681.25x = 172,116.75 × 79,421.27
  4. Step 4: Simplify right side
    124,681.25x = 13,669,730,873.27
  5. Step 5: Solve for x
    x = 13,669,730,873.27/124,681.25
  6. Step 6: Final answer
    x = 109,637.42

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1.5x scale

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.