Home / 105,158.90-145,097.12-66,904.64

Finding the Fourth Proportional to 105,158.90, 145,097.12 and 66,904.64

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Solution

The fourth proportional to 105,158.90, 145,097.12 and 66,904.64 is: 92,314.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,158.90 : 145,097.12 = 66,904.64 : x
  2. Step 2: Convert to fraction form
    105,158.90/145,097.12 = 66,904.64/x
  3. Step 3: Cross multiply
    105,158.90x = 145,097.12 × 66,904.64
  4. Step 4: Simplify right side
    105,158.90x = 9,707,670,578.64
  5. Step 5: Solve for x
    x = 9,707,670,578.64/105,158.90
  6. Step 6: Final answer
    x = 92,314.30

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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.