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Finding the Fourth Proportional to 105,461.64, 145,469.88 and 73,618.92

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Solution

The fourth proportional to 105,461.64, 145,469.88 and 73,618.92 is: 101,547.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,461.64 : 145,469.88 = 73,618.92 : x
  2. Step 2: Convert to fraction form
    105,461.64/145,469.88 = 73,618.92/x
  3. Step 3: Cross multiply
    105,461.64x = 145,469.88 × 73,618.92
  4. Step 4: Simplify right side
    105,461.64x = 10,709,335,458.13
  5. Step 5: Solve for x
    x = 10,709,335,458.13/105,461.64
  6. Step 6: Final answer
    x = 101,547.21

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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.