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Finding the Fourth Proportional to 100,026.78, 138,064.95 and 57,602.22

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Solution

The fourth proportional to 100,026.78, 138,064.95 and 57,602.22 is: 79,507.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,026.78 : 138,064.95 = 57,602.22 : x
  2. Step 2: Convert to fraction form
    100,026.78/138,064.95 = 57,602.22/x
  3. Step 3: Cross multiply
    100,026.78x = 138,064.95 × 57,602.22
  4. Step 4: Simplify right side
    100,026.78x = 7,952,847,624.19
  5. Step 5: Solve for x
    x = 7,952,847,624.19/100,026.78
  6. Step 6: Final answer
    x = 79,507.18

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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.