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Finding the Fourth Proportional to 153,809.55, 212,271.75 and 93,366.27

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Solution

The fourth proportional to 153,809.55, 212,271.75 and 93,366.27 is: 128,854.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,809.55 : 212,271.75 = 93,366.27 : x
  2. Step 2: Convert to fraction form
    153,809.55/212,271.75 = 93,366.27/x
  3. Step 3: Cross multiply
    153,809.55x = 212,271.75 × 93,366.27
  4. Step 4: Simplify right side
    153,809.55x = 19,819,021,523.87
  5. Step 5: Solve for x
    x = 19,819,021,523.87/153,809.55
  6. Step 6: Final answer
    x = 128,854.30

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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.