Home / 108,191.12-149,125.32-72,368.24

Finding the Fourth Proportional to 108,191.12, 149,125.32 and 72,368.24

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Solution

The fourth proportional to 108,191.12, 149,125.32 and 72,368.24 is: 99,748.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,191.12 : 149,125.32 = 72,368.24 : x
  2. Step 2: Convert to fraction form
    108,191.12/149,125.32 = 72,368.24/x
  3. Step 3: Cross multiply
    108,191.12x = 149,125.32 × 72,368.24
  4. Step 4: Simplify right side
    108,191.12x = 10,791,936,947.84
  5. Step 5: Solve for x
    x = 10,791,936,947.84/108,191.12
  6. Step 6: Final answer
    x = 99,748.82

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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.