Home / 153,943.20-231,152.40-83,959.20

Finding the Fourth Proportional to 153,943.20, 231,152.40 and 83,959.20

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Solution

The fourth proportional to 153,943.20, 231,152.40 and 83,959.20 is: 126,068.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,943.20 : 231,152.40 = 83,959.20 : x
  2. Step 2: Convert to fraction form
    153,943.20/231,152.40 = 83,959.20/x
  3. Step 3: Cross multiply
    153,943.20x = 231,152.40 × 83,959.20
  4. Step 4: Simplify right side
    153,943.20x = 19,407,370,582.08
  5. Step 5: Solve for x
    x = 19,407,370,582.08/153,943.20
  6. Step 6: Final answer
    x = 126,068.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.