Home / 100,010.08-138,026.88-57,005.02

Finding the Fourth Proportional to 100,010.08, 138,026.88 and 57,005.02

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Solution

The fourth proportional to 100,010.08, 138,026.88 and 57,005.02 is: 78,674.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,010.08 : 138,026.88 = 57,005.02 : x
  2. Step 2: Convert to fraction form
    100,010.08/138,026.88 = 57,005.02/x
  3. Step 3: Cross multiply
    100,010.08x = 138,026.88 × 57,005.02
  4. Step 4: Simplify right side
    100,010.08x = 7,868,225,054.94
  5. Step 5: Solve for x
    x = 7,868,225,054.94/100,010.08
  6. Step 6: Final answer
    x = 78,674.32

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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.