Home / 157,009.86-235,457.82-85,985.28

Finding the Fourth Proportional to 157,009.86, 235,457.82 and 85,985.28

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Solution

The fourth proportional to 157,009.86, 235,457.82 and 85,985.28 is: 128,946.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,009.86 : 235,457.82 = 85,985.28 : x
  2. Step 2: Convert to fraction form
    157,009.86/235,457.82 = 85,985.28/x
  3. Step 3: Cross multiply
    157,009.86x = 235,457.82 × 85,985.28
  4. Step 4: Simplify right side
    157,009.86x = 20,245,906,580.89
  5. Step 5: Solve for x
    x = 20,245,906,580.89/157,009.86
  6. Step 6: Final answer
    x = 128,946.72

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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.