Home / 126,528.06-189,644.47-70,341.30

Finding the Fourth Proportional to 126,528.06, 189,644.47 and 70,341.30

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Solution

The fourth proportional to 126,528.06, 189,644.47 and 70,341.30 is: 105,429.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,528.06 : 189,644.47 = 70,341.30 : x
  2. Step 2: Convert to fraction form
    126,528.06/189,644.47 = 70,341.30/x
  3. Step 3: Cross multiply
    126,528.06x = 189,644.47 × 70,341.30
  4. Step 4: Simplify right side
    126,528.06x = 13,339,838,557.61
  5. Step 5: Solve for x
    x = 13,339,838,557.61/126,528.06
  6. Step 6: Final answer
    x = 105,429.88

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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.