Home / 141,439.72-212,159.58-66,513.28

Finding the Fourth Proportional to 141,439.72, 212,159.58 and 66,513.28

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Solution

The fourth proportional to 141,439.72, 212,159.58 and 66,513.28 is: 99,769.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,439.72 : 212,159.58 = 66,513.28 : x
  2. Step 2: Convert to fraction form
    141,439.72/212,159.58 = 66,513.28/x
  3. Step 3: Cross multiply
    141,439.72x = 212,159.58 × 66,513.28
  4. Step 4: Simplify right side
    141,439.72x = 14,111,429,549.22
  5. Step 5: Solve for x
    x = 14,111,429,549.22/141,439.72
  6. Step 6: Final answer
    x = 99,769.92

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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.