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Finding the Fourth Proportional to 170,482.40, 255,881.16 and 86,301.64

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Solution

The fourth proportional to 170,482.40, 255,881.16 and 86,301.64 is: 129,532.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,482.40 : 255,881.16 = 86,301.64 : x
  2. Step 2: Convert to fraction form
    170,482.40/255,881.16 = 86,301.64/x
  3. Step 3: Cross multiply
    170,482.40x = 255,881.16 × 86,301.64
  4. Step 4: Simplify right side
    170,482.40x = 22,082,963,753.10
  5. Step 5: Solve for x
    x = 22,082,963,753.10/170,482.40
  6. Step 6: Final answer
    x = 129,532.22

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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.