Home / 157,726.60-236,735.70-78,897.40

Finding the Fourth Proportional to 157,726.60, 236,735.70 and 78,897.40

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Solution

The fourth proportional to 157,726.60, 236,735.70 and 78,897.40 is: 118,419.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,726.60 : 236,735.70 = 78,897.40 : x
  2. Step 2: Convert to fraction form
    157,726.60/236,735.70 = 78,897.40/x
  3. Step 3: Cross multiply
    157,726.60x = 236,735.70 × 78,897.40
  4. Step 4: Simplify right side
    157,726.60x = 18,677,831,217.18
  5. Step 5: Solve for x
    x = 18,677,831,217.18/157,726.60
  6. Step 6: Final answer
    x = 118,419.03

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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.