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Finding the Fourth Proportional to 100,073.47, 138,078.80 and 59,779.37

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Solution

The fourth proportional to 100,073.47, 138,078.80 and 59,779.37 is: 82,482.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,073.47 : 138,078.80 = 59,779.37 : x
  2. Step 2: Convert to fraction form
    100,073.47/138,078.80 = 59,779.37/x
  3. Step 3: Cross multiply
    100,073.47x = 138,078.80 × 59,779.37
  4. Step 4: Simplify right side
    100,073.47x = 8,254,262,685.07
  5. Step 5: Solve for x
    x = 8,254,262,685.07/100,073.47
  6. Step 6: Final answer
    x = 82,482.03

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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.