Home / 189,421.50-284,210.14-139,077.60

Finding the Fourth Proportional to 189,421.50, 284,210.14 and 139,077.60

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Solution

The fourth proportional to 189,421.50, 284,210.14 and 139,077.60 is: 208,673.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,421.50 : 284,210.14 = 139,077.60 : x
  2. Step 2: Convert to fraction form
    189,421.50/284,210.14 = 139,077.60/x
  3. Step 3: Cross multiply
    189,421.50x = 284,210.14 × 139,077.60
  4. Step 4: Simplify right side
    189,421.50x = 39,527,264,166.86
  5. Step 5: Solve for x
    x = 39,527,264,166.86/189,421.50
  6. Step 6: Final answer
    x = 208,673.59

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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.