Home / 78,315.06-117,472.05-19,151.58

Finding the Fourth Proportional to 78,315.06, 117,472.05 and 19,151.58

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Solution

The fourth proportional to 78,315.06, 117,472.05 and 19,151.58 is: 28,727.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,315.06 : 117,472.05 = 19,151.58 : x
  2. Step 2: Convert to fraction form
    78,315.06/117,472.05 = 19,151.58/x
  3. Step 3: Cross multiply
    78,315.06x = 117,472.05 × 19,151.58
  4. Step 4: Simplify right side
    78,315.06x = 2,249,775,363.34
  5. Step 5: Solve for x
    x = 2,249,775,363.34/78,315.06
  6. Step 6: Final answer
    x = 28,727.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.