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Finding the Fourth Proportional to 115,643.79, 173,347.52 and 65,618.21

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Solution

The fourth proportional to 115,643.79, 173,347.52 and 65,618.21 is: 98,360.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,643.79 : 173,347.52 = 65,618.21 : x
  2. Step 2: Convert to fraction form
    115,643.79/173,347.52 = 65,618.21/x
  3. Step 3: Cross multiply
    115,643.79x = 173,347.52 × 65,618.21
  4. Step 4: Simplify right side
    115,643.79x = 11,374,754,075.62
  5. Step 5: Solve for x
    x = 11,374,754,075.62/115,643.79
  6. Step 6: Final answer
    x = 98,360.27

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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.