Home / 137,140.02-189,370.04-86,237.93

Finding the Fourth Proportional to 137,140.02, 189,370.04 and 86,237.93

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Solution

The fourth proportional to 137,140.02, 189,370.04 and 86,237.93 is: 119,081.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,140.02 : 189,370.04 = 86,237.93 : x
  2. Step 2: Convert to fraction form
    137,140.02/189,370.04 = 86,237.93/x
  3. Step 3: Cross multiply
    137,140.02x = 189,370.04 × 86,237.93
  4. Step 4: Simplify right side
    137,140.02x = 16,330,880,295.85
  5. Step 5: Solve for x
    x = 16,330,880,295.85/137,140.02
  6. Step 6: Final answer
    x = 119,081.80

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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.