Home / 123,276.08-170,125.81-72,281.72

Finding the Fourth Proportional to 123,276.08, 170,125.81 and 72,281.72

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Solution

The fourth proportional to 123,276.08, 170,125.81 and 72,281.72 is: 99,751.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,276.08 : 170,125.81 = 72,281.72 : x
  2. Step 2: Convert to fraction form
    123,276.08/170,125.81 = 72,281.72/x
  3. Step 3: Cross multiply
    123,276.08x = 170,125.81 × 72,281.72
  4. Step 4: Simplify right side
    123,276.08x = 12,296,985,131.86
  5. Step 5: Solve for x
    x = 12,296,985,131.86/123,276.08
  6. Step 6: Final answer
    x = 99,751.60

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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.