Home / 128,233.75-176,962.65-71,645.13

Finding the Fourth Proportional to 128,233.75, 176,962.65 and 71,645.13

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Solution

The fourth proportional to 128,233.75, 176,962.65 and 71,645.13 is: 98,870.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,233.75 : 176,962.65 = 71,645.13 : x
  2. Step 2: Convert to fraction form
    128,233.75/176,962.65 = 71,645.13/x
  3. Step 3: Cross multiply
    128,233.75x = 176,962.65 × 71,645.13
  4. Step 4: Simplify right side
    128,233.75x = 12,678,512,064.39
  5. Step 5: Solve for x
    x = 12,678,512,064.39/128,233.75
  6. Step 6: Final answer
    x = 98,870.32

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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.