Home / 157,742.40-236,782.08-87,602.88

Finding the Fourth Proportional to 157,742.40, 236,782.08 and 87,602.88

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Solution

The fourth proportional to 157,742.40, 236,782.08 and 87,602.88 is: 131,497.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,742.40 : 236,782.08 = 87,602.88 : x
  2. Step 2: Convert to fraction form
    157,742.40/236,782.08 = 87,602.88/x
  3. Step 3: Cross multiply
    157,742.40x = 236,782.08 × 87,602.88
  4. Step 4: Simplify right side
    157,742.40x = 20,742,792,140.39
  5. Step 5: Solve for x
    x = 20,742,792,140.39/157,742.40
  6. Step 6: Final answer
    x = 131,497.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.