Home / 210,035.18-289,871.03-128,411.32

Finding the Fourth Proportional to 210,035.18, 289,871.03 and 128,411.32

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Solution

The fourth proportional to 210,035.18, 289,871.03 and 128,411.32 is: 177,221.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,035.18 : 289,871.03 = 128,411.32 : x
  2. Step 2: Convert to fraction form
    210,035.18/289,871.03 = 128,411.32/x
  3. Step 3: Cross multiply
    210,035.18x = 289,871.03 × 128,411.32
  4. Step 4: Simplify right side
    210,035.18x = 37,222,721,592.06
  5. Step 5: Solve for x
    x = 37,222,721,592.06/210,035.18
  6. Step 6: Final answer
    x = 177,221.37

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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.