Home / 153,928.17-212,456.28-90,286.47

Finding the Fourth Proportional to 153,928.17, 212,456.28 and 90,286.47

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Solution

The fourth proportional to 153,928.17, 212,456.28 and 90,286.47 is: 124,616.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,928.17 : 212,456.28 = 90,286.47 : x
  2. Step 2: Convert to fraction form
    153,928.17/212,456.28 = 90,286.47/x
  3. Step 3: Cross multiply
    153,928.17x = 212,456.28 × 90,286.47
  4. Step 4: Simplify right side
    153,928.17x = 19,181,927,550.53
  5. Step 5: Solve for x
    x = 19,181,927,550.53/153,928.17
  6. Step 6: Final answer
    x = 124,616.10

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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.