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Finding the Fourth Proportional to 113,430.16, 156,549.36 and 65,698.48

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Solution

The fourth proportional to 113,430.16, 156,549.36 and 65,698.48 is: 90,673.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,430.16 : 156,549.36 = 65,698.48 : x
  2. Step 2: Convert to fraction form
    113,430.16/156,549.36 = 65,698.48/x
  3. Step 3: Cross multiply
    113,430.16x = 156,549.36 × 65,698.48
  4. Step 4: Simplify right side
    113,430.16x = 10,285,054,996.97
  5. Step 5: Solve for x
    x = 10,285,054,996.97/113,430.16
  6. Step 6: Final answer
    x = 90,673.02

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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.