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Finding the Fourth Proportional to 97,430.80, 146,146.20 and 91,987.60

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Solution

The fourth proportional to 97,430.80, 146,146.20 and 91,987.60 is: 137,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,430.80 : 146,146.20 = 91,987.60 : x
  2. Step 2: Convert to fraction form
    97,430.80/146,146.20 = 91,987.60/x
  3. Step 3: Cross multiply
    97,430.80x = 146,146.20 × 91,987.60
  4. Step 4: Simplify right side
    97,430.80x = 13,443,638,187.12
  5. Step 5: Solve for x
    x = 13,443,638,187.12/97,430.80
  6. Step 6: Final answer
    x = 137,981.40

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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.