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Finding the Fourth Proportional to 153,421.20, 230,369.40 and 83,437.20

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Solution

The fourth proportional to 153,421.20, 230,369.40 and 83,437.20 is: 125,285.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,421.20 : 230,369.40 = 83,437.20 : x
  2. Step 2: Convert to fraction form
    153,421.20/230,369.40 = 83,437.20/x
  3. Step 3: Cross multiply
    153,421.20x = 230,369.40 × 83,437.20
  4. Step 4: Simplify right side
    153,421.20x = 19,221,377,701.68
  5. Step 5: Solve for x
    x = 19,221,377,701.68/153,421.20
  6. Step 6: Final answer
    x = 125,285.02

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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.