Home / 210,170.02-290,077.80-128,512.24

Finding the Fourth Proportional to 210,170.02, 290,077.80 and 128,512.24

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Solution

The fourth proportional to 210,170.02, 290,077.80 and 128,512.24 is: 177,373.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,170.02 : 290,077.80 = 128,512.24 : x
  2. Step 2: Convert to fraction form
    210,170.02/290,077.80 = 128,512.24/x
  3. Step 3: Cross multiply
    210,170.02x = 290,077.80 × 128,512.24
  4. Step 4: Simplify right side
    210,170.02x = 37,278,547,852.27
  5. Step 5: Solve for x
    x = 37,278,547,852.27/210,170.02
  6. Step 6: Final answer
    x = 177,373.29

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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.