Home / 119,905.64-165,368.16-72,150.06

Finding the Fourth Proportional to 119,905.64, 165,368.16 and 72,150.06

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Solution

The fourth proportional to 119,905.64, 165,368.16 and 72,150.06 is: 99,505.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,905.64 : 165,368.16 = 72,150.06 : x
  2. Step 2: Convert to fraction form
    119,905.64/165,368.16 = 72,150.06/x
  3. Step 3: Cross multiply
    119,905.64x = 165,368.16 × 72,150.06
  4. Step 4: Simplify right side
    119,905.64x = 11,931,322,666.09
  5. Step 5: Solve for x
    x = 11,931,322,666.09/119,905.64
  6. Step 6: Final answer
    x = 99,505.93

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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.