Home / 91,331.52-125,554.08-78,537.60

Finding the Fourth Proportional to 91,331.52, 125,554.08 and 78,537.60

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Solution

The fourth proportional to 91,331.52, 125,554.08 and 78,537.60 is: 107,966.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,331.52 : 125,554.08 = 78,537.60 : x
  2. Step 2: Convert to fraction form
    91,331.52/125,554.08 = 78,537.60/x
  3. Step 3: Cross multiply
    91,331.52x = 125,554.08 × 78,537.60
  4. Step 4: Simplify right side
    91,331.52x = 9,860,716,113.41
  5. Step 5: Solve for x
    x = 9,860,716,113.41/91,331.52
  6. Step 6: Final answer
    x = 107,966.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.