Home / 118,390.40-163,376.08-64,675.68

Finding the Fourth Proportional to 118,390.40, 163,376.08 and 64,675.68

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Solution

The fourth proportional to 118,390.40, 163,376.08 and 64,675.68 is: 89,250.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,390.40 : 163,376.08 = 64,675.68 : x
  2. Step 2: Convert to fraction form
    118,390.40/163,376.08 = 64,675.68/x
  3. Step 3: Cross multiply
    118,390.40x = 163,376.08 × 64,675.68
  4. Step 4: Simplify right side
    118,390.40x = 10,566,459,069.73
  5. Step 5: Solve for x
    x = 10,566,459,069.73/118,390.40
  6. Step 6: Final answer
    x = 89,250.98

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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.