Home / 145,130.33-200,258.07-81,455.82

Finding the Fourth Proportional to 145,130.33, 200,258.07 and 81,455.82

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Solution

The fourth proportional to 145,130.33, 200,258.07 and 81,455.82 is: 112,396.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,130.33 : 200,258.07 = 81,455.82 : x
  2. Step 2: Convert to fraction form
    145,130.33/200,258.07 = 81,455.82/x
  3. Step 3: Cross multiply
    145,130.33x = 200,258.07 × 81,455.82
  4. Step 4: Simplify right side
    145,130.33x = 16,312,185,303.47
  5. Step 5: Solve for x
    x = 16,312,185,303.47/145,130.33
  6. Step 6: Final answer
    x = 112,396.81

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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.