Home / 127,358.86-175,756.02-79,640.14

Finding the Fourth Proportional to 127,358.86, 175,756.02 and 79,640.14

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Solution

The fourth proportional to 127,358.86, 175,756.02 and 79,640.14 is: 109,903.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,358.86 : 175,756.02 = 79,640.14 : x
  2. Step 2: Convert to fraction form
    127,358.86/175,756.02 = 79,640.14/x
  3. Step 3: Cross multiply
    127,358.86x = 175,756.02 × 79,640.14
  4. Step 4: Simplify right side
    127,358.86x = 13,997,234,038.64
  5. Step 5: Solve for x
    x = 13,997,234,038.64/127,358.86
  6. Step 6: Final answer
    x = 109,903.89

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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.