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Finding the Fourth Proportional to 103,750.15, 155,625.23 and 77,506.15

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Solution

The fourth proportional to 103,750.15, 155,625.23 and 77,506.15 is: 116,259.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,750.15 : 155,625.23 = 77,506.15 : x
  2. Step 2: Convert to fraction form
    103,750.15/155,625.23 = 77,506.15/x
  3. Step 3: Cross multiply
    103,750.15x = 155,625.23 × 77,506.15
  4. Step 4: Simplify right side
    103,750.15x = 12,061,912,032.63
  5. Step 5: Solve for x
    x = 12,061,912,032.63/103,750.15
  6. Step 6: Final answer
    x = 116,259.23

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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.