Home / 134,141.12-185,130.80-80,455.68

Finding the Fourth Proportional to 134,141.12, 185,130.80 and 80,455.68

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Solution

The fourth proportional to 134,141.12, 185,130.80 and 80,455.68 is: 111,038.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,141.12 : 185,130.80 = 80,455.68 : x
  2. Step 2: Convert to fraction form
    134,141.12/185,130.80 = 80,455.68/x
  3. Step 3: Cross multiply
    134,141.12x = 185,130.80 × 80,455.68
  4. Step 4: Simplify right side
    134,141.12x = 14,894,824,402.94
  5. Step 5: Solve for x
    x = 14,894,824,402.94/134,141.12
  6. Step 6: Final answer
    x = 111,038.47

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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.