Home / 142,035.02-196,008.10-78,372.77

Finding the Fourth Proportional to 142,035.02, 196,008.10 and 78,372.77

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Solution

The fourth proportional to 142,035.02, 196,008.10 and 78,372.77 is: 108,154.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,035.02 : 196,008.10 = 78,372.77 : x
  2. Step 2: Convert to fraction form
    142,035.02/196,008.10 = 78,372.77/x
  3. Step 3: Cross multiply
    142,035.02x = 196,008.10 × 78,372.77
  4. Step 4: Simplify right side
    142,035.02x = 15,361,697,004.31
  5. Step 5: Solve for x
    x = 15,361,697,004.31/142,035.02
  6. Step 6: Final answer
    x = 108,154.29

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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.