Home / 106,318.40-159,331.80-86,635.40

Finding the Fourth Proportional to 106,318.40, 159,331.80 and 86,635.40

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Solution

The fourth proportional to 106,318.40, 159,331.80 and 86,635.40 is: 129,834.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,318.40 : 159,331.80 = 86,635.40 : x
  2. Step 2: Convert to fraction form
    106,318.40/159,331.80 = 86,635.40/x
  3. Step 3: Cross multiply
    106,318.40x = 159,331.80 × 86,635.40
  4. Step 4: Simplify right side
    106,318.40x = 13,803,774,225.72
  5. Step 5: Solve for x
    x = 13,803,774,225.72/106,318.40
  6. Step 6: Final answer
    x = 129,834.29

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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.