Home / 127,128.19-175,436.90-70,548.67

Finding the Fourth Proportional to 127,128.19, 175,436.90 and 70,548.67

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Solution

The fourth proportional to 127,128.19, 175,436.90 and 70,548.67 is: 97,357.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,128.19 : 175,436.90 = 70,548.67 : x
  2. Step 2: Convert to fraction form
    127,128.19/175,436.90 = 70,548.67/x
  3. Step 3: Cross multiply
    127,128.19x = 175,436.90 × 70,548.67
  4. Step 4: Simplify right side
    127,128.19x = 12,376,839,437.14
  5. Step 5: Solve for x
    x = 12,376,839,437.14/127,128.19
  6. Step 6: Final answer
    x = 97,357.16

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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.