Home / 99,129.22-136,798.35-53,807.20

Finding the Fourth Proportional to 99,129.22, 136,798.35 and 53,807.20

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Solution

The fourth proportional to 99,129.22, 136,798.35 and 53,807.20 is: 74,253.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,129.22 : 136,798.35 = 53,807.20 : x
  2. Step 2: Convert to fraction form
    99,129.22/136,798.35 = 53,807.20/x
  3. Step 3: Cross multiply
    99,129.22x = 136,798.35 × 53,807.20
  4. Step 4: Simplify right side
    99,129.22x = 7,360,736,178.12
  5. Step 5: Solve for x
    x = 7,360,736,178.12/99,129.22
  6. Step 6: Final answer
    x = 74,253.95

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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.