Home / 145,147.16-200,302.93-81,485.08

Finding the Fourth Proportional to 145,147.16, 200,302.93 and 81,485.08

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Solution

The fourth proportional to 145,147.16, 200,302.93 and 81,485.08 is: 112,449.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,147.16 : 200,302.93 = 81,485.08 : x
  2. Step 2: Convert to fraction form
    145,147.16/200,302.93 = 81,485.08/x
  3. Step 3: Cross multiply
    145,147.16x = 200,302.93 × 81,485.08
  4. Step 4: Simplify right side
    145,147.16x = 16,321,700,275.28
  5. Step 5: Solve for x
    x = 16,321,700,275.28/145,147.16
  6. Step 6: Final answer
    x = 112,449.33

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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.