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Finding the Fourth Proportional to 115,570.50, 173,264.90 and 77,658.25

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Solution

The fourth proportional to 115,570.50, 173,264.90 and 77,658.25 is: 116,426.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,570.50 : 173,264.90 = 77,658.25 : x
  2. Step 2: Convert to fraction form
    115,570.50/173,264.90 = 77,658.25/x
  3. Step 3: Cross multiply
    115,570.50x = 173,264.90 × 77,658.25
  4. Step 4: Simplify right side
    115,570.50x = 13,455,448,532.13
  5. Step 5: Solve for x
    x = 13,455,448,532.13/115,570.50
  6. Step 6: Final answer
    x = 116,426.32

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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.