Home / 112,439.45-155,188.10-72,204.05

Finding the Fourth Proportional to 112,439.45, 155,188.10 and 72,204.05

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Solution

The fourth proportional to 112,439.45, 155,188.10 and 72,204.05 is: 99,655.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,439.45 : 155,188.10 = 72,204.05 : x
  2. Step 2: Convert to fraction form
    112,439.45/155,188.10 = 72,204.05/x
  3. Step 3: Cross multiply
    112,439.45x = 155,188.10 × 72,204.05
  4. Step 4: Simplify right side
    112,439.45x = 11,205,209,331.81
  5. Step 5: Solve for x
    x = 11,205,209,331.81/112,439.45
  6. Step 6: Final answer
    x = 99,655.50

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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.