Home / 135,159.30-186,510.02-74,730.69

Finding the Fourth Proportional to 135,159.30, 186,510.02 and 74,730.69

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Solution

The fourth proportional to 135,159.30, 186,510.02 and 74,730.69 is: 103,122.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,159.30 : 186,510.02 = 74,730.69 : x
  2. Step 2: Convert to fraction form
    135,159.30/186,510.02 = 74,730.69/x
  3. Step 3: Cross multiply
    135,159.30x = 186,510.02 × 74,730.69
  4. Step 4: Simplify right side
    135,159.30x = 13,938,022,112.86
  5. Step 5: Solve for x
    x = 13,938,022,112.86/135,159.30
  6. Step 6: Final answer
    x = 103,122.92

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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.