Home / 129,415.02-178,592.36-72,826.40

Finding the Fourth Proportional to 129,415.02, 178,592.36 and 72,826.40

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Solution

The fourth proportional to 129,415.02, 178,592.36 and 72,826.40 is: 100,500.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,415.02 : 178,592.36 = 72,826.40 : x
  2. Step 2: Convert to fraction form
    129,415.02/178,592.36 = 72,826.40/x
  3. Step 3: Cross multiply
    129,415.02x = 178,592.36 × 72,826.40
  4. Step 4: Simplify right side
    129,415.02x = 13,006,238,646.30
  5. Step 5: Solve for x
    x = 13,006,238,646.30/129,415.02
  6. Step 6: Final answer
    x = 100,500.23

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1.5x scale

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.