Home / 137,143.02-189,374.18-86,240.93

Finding the Fourth Proportional to 137,143.02, 189,374.18 and 86,240.93

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Solution

The fourth proportional to 137,143.02, 189,374.18 and 86,240.93 is: 119,085.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,143.02 : 189,374.18 = 86,240.93 : x
  2. Step 2: Convert to fraction form
    137,143.02/189,374.18 = 86,240.93/x
  3. Step 3: Cross multiply
    137,143.02x = 189,374.18 × 86,240.93
  4. Step 4: Simplify right side
    137,143.02x = 16,331,805,401.19
  5. Step 5: Solve for x
    x = 16,331,805,401.19/137,143.02
  6. Step 6: Final answer
    x = 119,085.94

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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.