Home / 127,931.30-191,647.53-77,887.28

Finding the Fourth Proportional to 127,931.30, 191,647.53 and 77,887.28

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Solution

The fourth proportional to 127,931.30, 191,647.53 and 77,887.28 is: 116,679.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,931.30 : 191,647.53 = 77,887.28 : x
  2. Step 2: Convert to fraction form
    127,931.30/191,647.53 = 77,887.28/x
  3. Step 3: Cross multiply
    127,931.30x = 191,647.53 × 77,887.28
  4. Step 4: Simplify right side
    127,931.30x = 14,926,904,830.42
  5. Step 5: Solve for x
    x = 14,926,904,830.42/127,931.30
  6. Step 6: Final answer
    x = 116,679.07

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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.