Home / 109,611.60-164,417.40-87,304.20

Finding the Fourth Proportional to 109,611.60, 164,417.40 and 87,304.20

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Solution

The fourth proportional to 109,611.60, 164,417.40 and 87,304.20 is: 130,956.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,611.60 : 164,417.40 = 87,304.20 : x
  2. Step 2: Convert to fraction form
    109,611.60/164,417.40 = 87,304.20/x
  3. Step 3: Cross multiply
    109,611.60x = 164,417.40 × 87,304.20
  4. Step 4: Simplify right side
    109,611.60x = 14,354,329,573.08
  5. Step 5: Solve for x
    x = 14,354,329,573.08/109,611.60
  6. Step 6: Final answer
    x = 130,956.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.