Home / 114,270.12-171,341.02-78,287.20

Finding the Fourth Proportional to 114,270.12, 171,341.02 and 78,287.20

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Solution

The fourth proportional to 114,270.12, 171,341.02 and 78,287.20 is: 117,386.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,270.12 : 171,341.02 = 78,287.20 : x
  2. Step 2: Convert to fraction form
    114,270.12/171,341.02 = 78,287.20/x
  3. Step 3: Cross multiply
    114,270.12x = 171,341.02 × 78,287.20
  4. Step 4: Simplify right side
    114,270.12x = 13,413,808,700.94
  5. Step 5: Solve for x
    x = 13,413,808,700.94/114,270.12
  6. Step 6: Final answer
    x = 117,386.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.