Home / 129,409.10-178,681.86-127,342.40

Finding the Fourth Proportional to 129,409.10, 178,681.86 and 127,342.40

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Solution

The fourth proportional to 129,409.10, 178,681.86 and 127,342.40 is: 175,828.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,409.10 : 178,681.86 = 127,342.40 : x
  2. Step 2: Convert to fraction form
    129,409.10/178,681.86 = 127,342.40/x
  3. Step 3: Cross multiply
    129,409.10x = 178,681.86 × 127,342.40
  4. Step 4: Simplify right side
    129,409.10x = 22,753,776,888.86
  5. Step 5: Solve for x
    x = 22,753,776,888.86/129,409.10
  6. Step 6: Final answer
    x = 175,828.26

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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.