Home / 142,256.45-196,312.51-78,592.88

Finding the Fourth Proportional to 142,256.45, 196,312.51 and 78,592.88

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Solution

The fourth proportional to 142,256.45, 196,312.51 and 78,592.88 is: 108,457.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,256.45 : 196,312.51 = 78,592.88 : x
  2. Step 2: Convert to fraction form
    142,256.45/196,312.51 = 78,592.88/x
  3. Step 3: Cross multiply
    142,256.45x = 196,312.51 × 78,592.88
  4. Step 4: Simplify right side
    142,256.45x = 15,428,766,129.95
  5. Step 5: Solve for x
    x = 15,428,766,129.95/142,256.45
  6. Step 6: Final answer
    x = 108,457.41

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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.