Home / 142,528.12-196,680.54-78,862.12

Finding the Fourth Proportional to 142,528.12, 196,680.54 and 78,862.12

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Solution

The fourth proportional to 142,528.12, 196,680.54 and 78,862.12 is: 108,825.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,528.12 : 196,680.54 = 78,862.12 : x
  2. Step 2: Convert to fraction form
    142,528.12/196,680.54 = 78,862.12/x
  3. Step 3: Cross multiply
    142,528.12x = 196,680.54 × 78,862.12
  4. Step 4: Simplify right side
    142,528.12x = 15,510,644,347.14
  5. Step 5: Solve for x
    x = 15,510,644,347.14/142,528.12
  6. Step 6: Final answer
    x = 108,825.15

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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.