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Finding the Fourth Proportional to 105,707.30, 145,798.80 and 67,493.12

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Solution

The fourth proportional to 105,707.30, 145,798.80 and 67,493.12 is: 93,091.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,707.30 : 145,798.80 = 67,493.12 : x
  2. Step 2: Convert to fraction form
    105,707.30/145,798.80 = 67,493.12/x
  3. Step 3: Cross multiply
    105,707.30x = 145,798.80 × 67,493.12
  4. Step 4: Simplify right side
    105,707.30x = 9,840,415,904.26
  5. Step 5: Solve for x
    x = 9,840,415,904.26/105,707.30
  6. Step 6: Final answer
    x = 93,091.17

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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.