Home / 210,645.86-290,689.43-115,152.26

Finding the Fourth Proportional to 210,645.86, 290,689.43 and 115,152.26

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Solution

The fourth proportional to 210,645.86, 290,689.43 and 115,152.26 is: 158,909.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,645.86 : 290,689.43 = 115,152.26 : x
  2. Step 2: Convert to fraction form
    210,645.86/290,689.43 = 115,152.26/x
  3. Step 3: Cross multiply
    210,645.86x = 290,689.43 × 115,152.26
  4. Step 4: Simplify right side
    210,645.86x = 33,473,542,793.40
  5. Step 5: Solve for x
    x = 33,473,542,793.40/210,645.86
  6. Step 6: Final answer
    x = 158,909.10

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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.