Home / 112,587.16-155,391.15-72,351.22

Finding the Fourth Proportional to 112,587.16, 155,391.15 and 72,351.22

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Solution

The fourth proportional to 112,587.16, 155,391.15 and 72,351.22 is: 99,858.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,587.16 : 155,391.15 = 72,351.22 : x
  2. Step 2: Convert to fraction form
    112,587.16/155,391.15 = 72,351.22/x
  3. Step 3: Cross multiply
    112,587.16x = 155,391.15 × 72,351.22
  4. Step 4: Simplify right side
    112,587.16x = 11,242,739,279.70
  5. Step 5: Solve for x
    x = 11,242,739,279.70/112,587.16
  6. Step 6: Final answer
    x = 99,858.09

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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.