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Finding the Fourth Proportional to 124,378.88, 171,647.48 and 70,673

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Solution

The fourth proportional to 124,378.88, 171,647.48 and 70,673 is: 97,531.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,378.88 : 171,647.48 = 70,673 : x
  2. Step 2: Convert to fraction form
    124,378.88/171,647.48 = 70,673/x
  3. Step 3: Cross multiply
    124,378.88x = 171,647.48 × 70,673
  4. Step 4: Simplify right side
    124,378.88x = 12,130,842,354.04
  5. Step 5: Solve for x
    x = 12,130,842,354.04/124,378.88
  6. Step 6: Final answer
    x = 97,531.37

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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.