Home / 100,341.19-138,351.14-64,532.71

Finding the Fourth Proportional to 100,341.19, 138,351.14 and 64,532.71

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Solution

The fourth proportional to 100,341.19, 138,351.14 and 64,532.71 is: 88,978.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,341.19 : 138,351.14 = 64,532.71 : x
  2. Step 2: Convert to fraction form
    100,341.19/138,351.14 = 64,532.71/x
  3. Step 3: Cross multiply
    100,341.19x = 138,351.14 × 64,532.71
  4. Step 4: Simplify right side
    100,341.19x = 8,928,173,673.13
  5. Step 5: Solve for x
    x = 8,928,173,673.13/100,341.19
  6. Step 6: Final answer
    x = 88,978.15

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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.