Home / 105,082.11-145,032.12-62,643.38

Finding the Fourth Proportional to 105,082.11, 145,032.12 and 62,643.38

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Solution

The fourth proportional to 105,082.11, 145,032.12 and 62,643.38 is: 86,459.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,082.11 : 145,032.12 = 62,643.38 : x
  2. Step 2: Convert to fraction form
    105,082.11/145,032.12 = 62,643.38/x
  3. Step 3: Cross multiply
    105,082.11x = 145,032.12 × 62,643.38
  4. Step 4: Simplify right side
    105,082.11x = 9,085,301,480.21
  5. Step 5: Solve for x
    x = 9,085,301,480.21/105,082.11
  6. Step 6: Final answer
    x = 86,459.07

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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.