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Finding the Fourth Proportional to 116,438.65, 160,702.36 and 65,455.58

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Solution

The fourth proportional to 116,438.65, 160,702.36 and 65,455.58 is: 90,338.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,438.65 : 160,702.36 = 65,455.58 : x
  2. Step 2: Convert to fraction form
    116,438.65/160,702.36 = 65,455.58/x
  3. Step 3: Cross multiply
    116,438.65x = 160,702.36 × 65,455.58
  4. Step 4: Simplify right side
    116,438.65x = 10,518,866,419.29
  5. Step 5: Solve for x
    x = 10,518,866,419.29/116,438.65
  6. Step 6: Final answer
    x = 90,338.27

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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.