Home / 128,799.37-177,753.45-71,444.35

Finding the Fourth Proportional to 128,799.37, 177,753.45 and 71,444.35

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Solution

The fourth proportional to 128,799.37, 177,753.45 and 71,444.35 is: 98,598.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,799.37 : 177,753.45 = 71,444.35 : x
  2. Step 2: Convert to fraction form
    128,799.37/177,753.45 = 71,444.35/x
  3. Step 3: Cross multiply
    128,799.37x = 177,753.45 × 71,444.35
  4. Step 4: Simplify right side
    128,799.37x = 12,699,479,695.51
  5. Step 5: Solve for x
    x = 12,699,479,695.51/128,799.37
  6. Step 6: Final answer
    x = 98,598.93

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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.