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Finding the Fourth Proportional to 97,763.20, 146,644.80 and 77,934.40

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Solution

The fourth proportional to 97,763.20, 146,644.80 and 77,934.40 is: 116,901.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,763.20 : 146,644.80 = 77,934.40 : x
  2. Step 2: Convert to fraction form
    97,763.20/146,644.80 = 77,934.40/x
  3. Step 3: Cross multiply
    97,763.20x = 146,644.80 × 77,934.40
  4. Step 4: Simplify right side
    97,763.20x = 11,428,674,501.12
  5. Step 5: Solve for x
    x = 11,428,674,501.12/97,763.20
  6. Step 6: Final answer
    x = 116,901.60

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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.