Home / 118,421.88-163,420.25-64,705.74

Finding the Fourth Proportional to 118,421.88, 163,420.25 and 64,705.74

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Solution

The fourth proportional to 118,421.88, 163,420.25 and 64,705.74 is: 89,292.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,421.88 : 163,420.25 = 64,705.74 : x
  2. Step 2: Convert to fraction form
    118,421.88/163,420.25 = 64,705.74/x
  3. Step 3: Cross multiply
    118,421.88x = 163,420.25 × 64,705.74
  4. Step 4: Simplify right side
    118,421.88x = 10,574,228,554.09
  5. Step 5: Solve for x
    x = 10,574,228,554.09/118,421.88
  6. Step 6: Final answer
    x = 89,292.86

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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.