Home / 105,397.45-145,407.62-67,150.16

Finding the Fourth Proportional to 105,397.45, 145,407.62 and 67,150.16

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Solution

The fourth proportional to 105,397.45, 145,407.62 and 67,150.16 is: 92,641.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,397.45 : 145,407.62 = 67,150.16 : x
  2. Step 2: Convert to fraction form
    105,397.45/145,407.62 = 67,150.16/x
  3. Step 3: Cross multiply
    105,397.45x = 145,407.62 × 67,150.16
  4. Step 4: Simplify right side
    105,397.45x = 9,764,144,948.22
  5. Step 5: Solve for x
    x = 9,764,144,948.22/105,397.45
  6. Step 6: Final answer
    x = 92,641.19

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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.