Home / 109,985.10-164,977.65-70,619.10

Finding the Fourth Proportional to 109,985.10, 164,977.65 and 70,619.10

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Solution

The fourth proportional to 109,985.10, 164,977.65 and 70,619.10 is: 105,928.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,985.10 : 164,977.65 = 70,619.10 : x
  2. Step 2: Convert to fraction form
    109,985.10/164,977.65 = 70,619.10/x
  3. Step 3: Cross multiply
    109,985.10x = 164,977.65 × 70,619.10
  4. Step 4: Simplify right side
    109,985.10x = 11,650,573,163.12
  5. Step 5: Solve for x
    x = 11,650,573,163.12/109,985.10
  6. Step 6: Final answer
    x = 105,928.65

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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.