Home / 189,631.90-284,280.85-77,406.45

Finding the Fourth Proportional to 189,631.90, 284,280.85 and 77,406.45

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Solution

The fourth proportional to 189,631.90, 284,280.85 and 77,406.45 is: 116,041.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,631.90 : 284,280.85 = 77,406.45 : x
  2. Step 2: Convert to fraction form
    189,631.90/284,280.85 = 77,406.45/x
  3. Step 3: Cross multiply
    189,631.90x = 284,280.85 × 77,406.45
  4. Step 4: Simplify right side
    189,631.90x = 22,005,170,432.19
  5. Step 5: Solve for x
    x = 22,005,170,432.19/189,631.90
  6. Step 6: Final answer
    x = 116,041.50

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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.