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Finding the Fourth Proportional to 98,151.40, 135,448.94 and 53,439.40

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Solution

The fourth proportional to 98,151.40, 135,448.94 and 53,439.40 is: 73,746.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,151.40 : 135,448.94 = 53,439.40 : x
  2. Step 2: Convert to fraction form
    98,151.40/135,448.94 = 53,439.40/x
  3. Step 3: Cross multiply
    98,151.40x = 135,448.94 × 53,439.40
  4. Step 4: Simplify right side
    98,151.40x = 7,238,310,084.24
  5. Step 5: Solve for x
    x = 7,238,310,084.24/98,151.40
  6. Step 6: Final answer
    x = 73,746.38

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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.