Home / 118,372.61-163,142.96-89,623.40

Finding the Fourth Proportional to 118,372.61, 163,142.96 and 89,623.40

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Solution

The fourth proportional to 118,372.61, 163,142.96 and 89,623.40 is: 123,520.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,372.61 : 163,142.96 = 89,623.40 : x
  2. Step 2: Convert to fraction form
    118,372.61/163,142.96 = 89,623.40/x
  3. Step 3: Cross multiply
    118,372.61x = 163,142.96 × 89,623.40
  4. Step 4: Simplify right side
    118,372.61x = 14,621,426,001.56
  5. Step 5: Solve for x
    x = 14,621,426,001.56/118,372.61
  6. Step 6: Final answer
    x = 123,520.35

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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.