Home / 128,598.10-177,461.36-71,235.12

Finding the Fourth Proportional to 128,598.10, 177,461.36 and 71,235.12

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Solution

The fourth proportional to 128,598.10, 177,461.36 and 71,235.12 is: 98,302.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,598.10 : 177,461.36 = 71,235.12 : x
  2. Step 2: Convert to fraction form
    128,598.10/177,461.36 = 71,235.12/x
  3. Step 3: Cross multiply
    128,598.10x = 177,461.36 × 71,235.12
  4. Step 4: Simplify right side
    128,598.10x = 12,641,481,274.96
  5. Step 5: Solve for x
    x = 12,641,481,274.96/128,598.10
  6. Step 6: Final answer
    x = 98,302.24

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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.