Home / 142,630.02-196,832.31-78,970.11

Finding the Fourth Proportional to 142,630.02, 196,832.31 and 78,970.11

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Solution

The fourth proportional to 142,630.02, 196,832.31 and 78,970.11 is: 108,980.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,630.02 : 196,832.31 = 78,970.11 : x
  2. Step 2: Convert to fraction form
    142,630.02/196,832.31 = 78,970.11/x
  3. Step 3: Cross multiply
    142,630.02x = 196,832.31 × 78,970.11
  4. Step 4: Simplify right side
    142,630.02x = 15,543,869,172.25
  5. Step 5: Solve for x
    x = 15,543,869,172.25/142,630.02
  6. Step 6: Final answer
    x = 108,980.35

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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.