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Finding the Fourth Proportional to 159,534.80, 239,302.20 and 130,010.30

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Solution

The fourth proportional to 159,534.80, 239,302.20 and 130,010.30 is: 195,015.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,534.80 : 239,302.20 = 130,010.30 : x
  2. Step 2: Convert to fraction form
    159,534.80/239,302.20 = 130,010.30/x
  3. Step 3: Cross multiply
    159,534.80x = 239,302.20 × 130,010.30
  4. Step 4: Simplify right side
    159,534.80x = 31,111,750,812.66
  5. Step 5: Solve for x
    x = 31,111,750,812.66/159,534.80
  6. Step 6: Final answer
    x = 195,015.45

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1.5x scale

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.