Home / 118,153.60-163,040-72,824.32

Finding the Fourth Proportional to 118,153.60, 163,040 and 72,824.32

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Solution

The fourth proportional to 118,153.60, 163,040 and 72,824.32 is: 100,490.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,153.60 : 163,040 = 72,824.32 : x
  2. Step 2: Convert to fraction form
    118,153.60/163,040 = 72,824.32/x
  3. Step 3: Cross multiply
    118,153.60x = 163,040 × 72,824.32
  4. Step 4: Simplify right side
    118,153.60x = 11,873,277,132.80
  5. Step 5: Solve for x
    x = 11,873,277,132.80/118,153.60
  6. Step 6: Final answer
    x = 100,490.19

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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.