Home / 210,368.16-290,330.88-129,793.56

Finding the Fourth Proportional to 210,368.16, 290,330.88 and 129,793.56

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Solution

The fourth proportional to 210,368.16, 290,330.88 and 129,793.56 is: 179,129.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,368.16 : 290,330.88 = 129,793.56 : x
  2. Step 2: Convert to fraction form
    210,368.16/290,330.88 = 129,793.56/x
  3. Step 3: Cross multiply
    210,368.16x = 290,330.88 × 129,793.56
  4. Step 4: Simplify right side
    210,368.16x = 37,683,078,493.13
  5. Step 5: Solve for x
    x = 37,683,078,493.13/210,368.16
  6. Step 6: Final answer
    x = 179,129.19

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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.