Home / 119,870.32-165,431.64-66,166.96

Finding the Fourth Proportional to 119,870.32, 165,431.64 and 66,166.96

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Solution

The fourth proportional to 119,870.32, 165,431.64 and 66,166.96 is: 91,316.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,870.32 : 165,431.64 = 66,166.96 : x
  2. Step 2: Convert to fraction form
    119,870.32/165,431.64 = 66,166.96/x
  3. Step 3: Cross multiply
    119,870.32x = 165,431.64 × 66,166.96
  4. Step 4: Simplify right side
    119,870.32x = 10,946,108,706.61
  5. Step 5: Solve for x
    x = 10,946,108,706.61/119,870.32
  6. Step 6: Final answer
    x = 91,316.25

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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.