Home / 152,019.28-209,807.46-87,487.21

Finding the Fourth Proportional to 152,019.28, 209,807.46 and 87,487.21

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Solution

The fourth proportional to 152,019.28, 209,807.46 and 87,487.21 is: 120,744.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,019.28 : 209,807.46 = 87,487.21 : x
  2. Step 2: Convert to fraction form
    152,019.28/209,807.46 = 87,487.21/x
  3. Step 3: Cross multiply
    152,019.28x = 209,807.46 × 87,487.21
  4. Step 4: Simplify right side
    152,019.28x = 18,355,469,312.59
  5. Step 5: Solve for x
    x = 18,355,469,312.59/152,019.28
  6. Step 6: Final answer
    x = 120,744.35

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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.