Home / 123,518.02-170,456.21-72,531.36

Finding the Fourth Proportional to 123,518.02, 170,456.21 and 72,531.36

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Solution

The fourth proportional to 123,518.02, 170,456.21 and 72,531.36 is: 100,094.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,518.02 : 170,456.21 = 72,531.36 : x
  2. Step 2: Convert to fraction form
    123,518.02/170,456.21 = 72,531.36/x
  3. Step 3: Cross multiply
    123,518.02x = 170,456.21 × 72,531.36
  4. Step 4: Simplify right side
    123,518.02x = 12,363,420,731.75
  5. Step 5: Solve for x
    x = 12,363,420,731.75/123,518.02
  6. Step 6: Final answer
    x = 100,094.07

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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.