Home / 142,037.02-196,010.86-78,374.76

Finding the Fourth Proportional to 142,037.02, 196,010.86 and 78,374.76

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Solution

The fourth proportional to 142,037.02, 196,010.86 and 78,374.76 is: 108,157.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,037.02 : 196,010.86 = 78,374.76 : x
  2. Step 2: Convert to fraction form
    142,037.02/196,010.86 = 78,374.76/x
  3. Step 3: Cross multiply
    142,037.02x = 196,010.86 × 78,374.76
  4. Step 4: Simplify right side
    142,037.02x = 15,362,304,109.89
  5. Step 5: Solve for x
    x = 15,362,304,109.89/142,037.02
  6. Step 6: Final answer
    x = 108,157.04

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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.