Home / 154,385.13-213,051.48-83,729.13

Finding the Fourth Proportional to 154,385.13, 213,051.48 and 83,729.13

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Solution

The fourth proportional to 154,385.13, 213,051.48 and 83,729.13 is: 115,546.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,385.13 : 213,051.48 = 83,729.13 : x
  2. Step 2: Convert to fraction form
    154,385.13/213,051.48 = 83,729.13/x
  3. Step 3: Cross multiply
    154,385.13x = 213,051.48 × 83,729.13
  4. Step 4: Simplify right side
    154,385.13x = 17,838,615,065.61
  5. Step 5: Solve for x
    x = 17,838,615,065.61/154,385.13
  6. Step 6: Final answer
    x = 115,546.20

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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.