Home / 109,611.10-164,416.65-87,303.70

Finding the Fourth Proportional to 109,611.10, 164,416.65 and 87,303.70

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Solution

The fourth proportional to 109,611.10, 164,416.65 and 87,303.70 is: 130,955.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,611.10 : 164,416.65 = 87,303.70 : x
  2. Step 2: Convert to fraction form
    109,611.10/164,416.65 = 87,303.70/x
  3. Step 3: Cross multiply
    109,611.10x = 164,416.65 × 87,303.70
  4. Step 4: Simplify right side
    109,611.10x = 14,354,181,886.61
  5. Step 5: Solve for x
    x = 14,354,181,886.61/109,611.10
  6. Step 6: Final answer
    x = 130,955.55

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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.