Home / 105,581.29-145,705.14-64,188.22

Finding the Fourth Proportional to 105,581.29, 145,705.14 and 64,188.22

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Solution

The fourth proportional to 105,581.29, 145,705.14 and 64,188.22 is: 88,581.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,581.29 : 145,705.14 = 64,188.22 : x
  2. Step 2: Convert to fraction form
    105,581.29/145,705.14 = 64,188.22/x
  3. Step 3: Cross multiply
    105,581.29x = 145,705.14 × 64,188.22
  4. Step 4: Simplify right side
    105,581.29x = 9,352,552,531.98
  5. Step 5: Solve for x
    x = 9,352,552,531.98/105,581.29
  6. Step 6: Final answer
    x = 88,581.53

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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.