Home / 156,915.03-235,430.87-72,715.53

Finding the Fourth Proportional to 156,915.03, 235,430.87 and 72,715.53

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Solution

The fourth proportional to 156,915.03, 235,430.87 and 72,715.53 is: 109,100.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,915.03 : 235,430.87 = 72,715.53 : x
  2. Step 2: Convert to fraction form
    156,915.03/235,430.87 = 72,715.53/x
  3. Step 3: Cross multiply
    156,915.03x = 235,430.87 × 72,715.53
  4. Step 4: Simplify right side
    156,915.03x = 17,119,480,126.83
  5. Step 5: Solve for x
    x = 17,119,480,126.83/156,915.03
  6. Step 6: Final answer
    x = 109,100.32

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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.