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Finding the Fourth Proportional to 128,002.32, 191,895.03 and 53,075.70

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Solution

The fourth proportional to 128,002.32, 191,895.03 and 53,075.70 is: 79,568.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,002.32 : 191,895.03 = 53,075.70 : x
  2. Step 2: Convert to fraction form
    128,002.32/191,895.03 = 53,075.70/x
  3. Step 3: Cross multiply
    128,002.32x = 191,895.03 × 53,075.70
  4. Step 4: Simplify right side
    128,002.32x = 10,184,963,043.77
  5. Step 5: Solve for x
    x = 10,184,963,043.77/128,002.32
  6. Step 6: Final answer
    x = 79,568.58

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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.