Home / 109,661.07-151,330.95-61,916.43

Finding the Fourth Proportional to 109,661.07, 151,330.95 and 61,916.43

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Solution

The fourth proportional to 109,661.07, 151,330.95 and 61,916.43 is: 85,443.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,661.07 : 151,330.95 = 61,916.43 : x
  2. Step 2: Convert to fraction form
    109,661.07/151,330.95 = 61,916.43/x
  3. Step 3: Cross multiply
    109,661.07x = 151,330.95 × 61,916.43
  4. Step 4: Simplify right side
    109,661.07x = 9,369,872,172.51
  5. Step 5: Solve for x
    x = 9,369,872,172.51/109,661.07
  6. Step 6: Final answer
    x = 85,443.92

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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.