Home / 110,916.88-153,133.14-72,191.68

Finding the Fourth Proportional to 110,916.88, 153,133.14 and 72,191.68

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Solution

The fourth proportional to 110,916.88, 153,133.14 and 72,191.68 is: 99,668.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,916.88 : 153,133.14 = 72,191.68 : x
  2. Step 2: Convert to fraction form
    110,916.88/153,133.14 = 72,191.68/x
  3. Step 3: Cross multiply
    110,916.88x = 153,133.14 × 72,191.68
  4. Step 4: Simplify right side
    110,916.88x = 11,054,938,640.28
  5. Step 5: Solve for x
    x = 11,054,938,640.28/110,916.88
  6. Step 6: Final answer
    x = 99,668.68

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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.