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Finding the Fourth Proportional to 97,300.80, 145,720.80 and 65,966.40

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Solution

The fourth proportional to 97,300.80, 145,720.80 and 65,966.40 is: 98,793.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,300.80 : 145,720.80 = 65,966.40 : x
  2. Step 2: Convert to fraction form
    97,300.80/145,720.80 = 65,966.40/x
  3. Step 3: Cross multiply
    97,300.80x = 145,720.80 × 65,966.40
  4. Step 4: Simplify right side
    97,300.80x = 9,612,676,581.12
  5. Step 5: Solve for x
    x = 9,612,676,581.12/97,300.80
  6. Step 6: Final answer
    x = 98,793.40

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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.