Home / 128,460.36-177,271.59-71,102.01

Finding the Fourth Proportional to 128,460.36, 177,271.59 and 71,102.01

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Solution

The fourth proportional to 128,460.36, 177,271.59 and 71,102.01 is: 98,118.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,460.36 : 177,271.59 = 71,102.01 : x
  2. Step 2: Convert to fraction form
    128,460.36/177,271.59 = 71,102.01/x
  3. Step 3: Cross multiply
    128,460.36x = 177,271.59 × 71,102.01
  4. Step 4: Simplify right side
    128,460.36x = 12,604,366,364.90
  5. Step 5: Solve for x
    x = 12,604,366,364.90/128,460.36
  6. Step 6: Final answer
    x = 98,118.72

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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.