Home / 105,443.28-145,507.08-64,594.92

Finding the Fourth Proportional to 105,443.28, 145,507.08 and 64,594.92

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Solution

The fourth proportional to 105,443.28, 145,507.08 and 64,594.92 is: 89,138.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,443.28 : 145,507.08 = 64,594.92 : x
  2. Step 2: Convert to fraction form
    105,443.28/145,507.08 = 64,594.92/x
  3. Step 3: Cross multiply
    105,443.28x = 145,507.08 × 64,594.92
  4. Step 4: Simplify right side
    105,443.28x = 9,399,018,192.03
  5. Step 5: Solve for x
    x = 9,399,018,192.03/105,443.28
  6. Step 6: Final answer
    x = 89,138.14

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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.