Home / 139,872.08-193,021.04-76,210.40

Finding the Fourth Proportional to 139,872.08, 193,021.04 and 76,210.40

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Solution

The fourth proportional to 139,872.08, 193,021.04 and 76,210.40 is: 105,169.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,872.08 : 193,021.04 = 76,210.40 : x
  2. Step 2: Convert to fraction form
    139,872.08/193,021.04 = 76,210.40/x
  3. Step 3: Cross multiply
    139,872.08x = 193,021.04 × 76,210.40
  4. Step 4: Simplify right side
    139,872.08x = 14,710,210,666.82
  5. Step 5: Solve for x
    x = 14,710,210,666.82/139,872.08
  6. Step 6: Final answer
    x = 105,169.03

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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.