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Finding the Fourth Proportional to 128,060.04, 176,724.44 and 74,347.32

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Solution

The fourth proportional to 128,060.04, 176,724.44 and 74,347.32 is: 102,600.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,060.04 : 176,724.44 = 74,347.32 : x
  2. Step 2: Convert to fraction form
    128,060.04/176,724.44 = 74,347.32/x
  3. Step 3: Cross multiply
    128,060.04x = 176,724.44 × 74,347.32
  4. Step 4: Simplify right side
    128,060.04x = 13,138,988,492.50
  5. Step 5: Solve for x
    x = 13,138,988,492.50/128,060.04
  6. Step 6: Final answer
    x = 102,600.22

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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.