Home / 105,268.08-145,299.24-64,988.40

Finding the Fourth Proportional to 105,268.08, 145,299.24 and 64,988.40

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Solution

The fourth proportional to 105,268.08, 145,299.24 and 64,988.40 is: 89,702.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,268.08 : 145,299.24 = 64,988.40 : x
  2. Step 2: Convert to fraction form
    105,268.08/145,299.24 = 64,988.40/x
  3. Step 3: Cross multiply
    105,268.08x = 145,299.24 × 64,988.40
  4. Step 4: Simplify right side
    105,268.08x = 9,442,765,128.82
  5. Step 5: Solve for x
    x = 9,442,765,128.82/105,268.08
  6. Step 6: Final answer
    x = 89,702.07

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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.