Home / 154,897.56-213,746.16-86,905.20

Finding the Fourth Proportional to 154,897.56, 213,746.16 and 86,905.20

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Solution

The fourth proportional to 154,897.56, 213,746.16 and 86,905.20 is: 119,922.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,897.56 : 213,746.16 = 86,905.20 : x
  2. Step 2: Convert to fraction form
    154,897.56/213,746.16 = 86,905.20/x
  3. Step 3: Cross multiply
    154,897.56x = 213,746.16 × 86,905.20
  4. Step 4: Simplify right side
    154,897.56x = 18,575,652,784.03
  5. Step 5: Solve for x
    x = 18,575,652,784.03/154,897.56
  6. Step 6: Final answer
    x = 119,922.18

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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.