Home / 145,864.32-201,291.56-81,332.80

Finding the Fourth Proportional to 145,864.32, 201,291.56 and 81,332.80

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Solution

The fourth proportional to 145,864.32, 201,291.56 and 81,332.80 is: 112,238.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,864.32 : 201,291.56 = 81,332.80 : x
  2. Step 2: Convert to fraction form
    145,864.32/201,291.56 = 81,332.80/x
  3. Step 3: Cross multiply
    145,864.32x = 201,291.56 × 81,332.80
  4. Step 4: Simplify right side
    145,864.32x = 16,371,606,191.17
  5. Step 5: Solve for x
    x = 16,371,606,191.17/145,864.32
  6. Step 6: Final answer
    x = 112,238.59

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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.