Home / 156,075.42-215,406.64-102,440.46

Finding the Fourth Proportional to 156,075.42, 215,406.64 and 102,440.46

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Solution

The fourth proportional to 156,075.42, 215,406.64 and 102,440.46 is: 141,382.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,075.42 : 215,406.64 = 102,440.46 : x
  2. Step 2: Convert to fraction form
    156,075.42/215,406.64 = 102,440.46/x
  3. Step 3: Cross multiply
    156,075.42x = 215,406.64 × 102,440.46
  4. Step 4: Simplify right side
    156,075.42x = 22,066,355,288.65
  5. Step 5: Solve for x
    x = 22,066,355,288.65/156,075.42
  6. Step 6: Final answer
    x = 141,382.64

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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.