Home / 142,548.84-196,714.80-78,886.62

Finding the Fourth Proportional to 142,548.84, 196,714.80 and 78,886.62

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Solution

The fourth proportional to 142,548.84, 196,714.80 and 78,886.62 is: 108,862.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,548.84 : 196,714.80 = 78,886.62 : x
  2. Step 2: Convert to fraction form
    142,548.84/196,714.80 = 78,886.62/x
  3. Step 3: Cross multiply
    142,548.84x = 196,714.80 × 78,886.62
  4. Step 4: Simplify right side
    142,548.84x = 15,518,165,675.98
  5. Step 5: Solve for x
    x = 15,518,165,675.98/142,548.84
  6. Step 6: Final answer
    x = 108,862.10

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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.