Home / 127,977.60-191,966.40-72,681.60

Finding the Fourth Proportional to 127,977.60, 191,966.40 and 72,681.60

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Solution

The fourth proportional to 127,977.60, 191,966.40 and 72,681.60 is: 109,022.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,977.60 : 191,966.40 = 72,681.60 : x
  2. Step 2: Convert to fraction form
    127,977.60/191,966.40 = 72,681.60/x
  3. Step 3: Cross multiply
    127,977.60x = 191,966.40 × 72,681.60
  4. Step 4: Simplify right side
    127,977.60x = 13,952,425,098.24
  5. Step 5: Solve for x
    x = 13,952,425,098.24/127,977.60
  6. Step 6: Final answer
    x = 109,022.40

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1.5x scale

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.