Home / 127,643.59-176,146.64-70,281.68

Finding the Fourth Proportional to 127,643.59, 176,146.64 and 70,281.68

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Solution

The fourth proportional to 127,643.59, 176,146.64 and 70,281.68 is: 96,987.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,643.59 : 176,146.64 = 70,281.68 : x
  2. Step 2: Convert to fraction form
    127,643.59/176,146.64 = 70,281.68/x
  3. Step 3: Cross multiply
    127,643.59x = 176,146.64 × 70,281.68
  4. Step 4: Simplify right side
    127,643.59x = 12,379,881,874.51
  5. Step 5: Solve for x
    x = 12,379,881,874.51/127,643.59
  6. Step 6: Final answer
    x = 96,987.89

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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.