Home / 153,793.28-212,339.64-99,477.08

Finding the Fourth Proportional to 153,793.28, 212,339.64 and 99,477.08

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Solution

The fourth proportional to 153,793.28, 212,339.64 and 99,477.08 is: 137,346.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,793.28 : 212,339.64 = 99,477.08 : x
  2. Step 2: Convert to fraction form
    153,793.28/212,339.64 = 99,477.08/x
  3. Step 3: Cross multiply
    153,793.28x = 212,339.64 × 99,477.08
  4. Step 4: Simplify right side
    153,793.28x = 21,122,927,355.45
  5. Step 5: Solve for x
    x = 21,122,927,355.45/153,793.28
  6. Step 6: Final answer
    x = 137,346.23

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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.