Home / 105,385.14-145,444.78-69,117.08

Finding the Fourth Proportional to 105,385.14, 145,444.78 and 69,117.08

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Solution

The fourth proportional to 105,385.14, 145,444.78 and 69,117.08 is: 95,390.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,385.14 : 145,444.78 = 69,117.08 : x
  2. Step 2: Convert to fraction form
    105,385.14/145,444.78 = 69,117.08/x
  3. Step 3: Cross multiply
    105,385.14x = 145,444.78 × 69,117.08
  4. Step 4: Simplify right side
    105,385.14x = 10,052,718,494.84
  5. Step 5: Solve for x
    x = 10,052,718,494.84/105,385.14
  6. Step 6: Final answer
    x = 95,390.28

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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.