Home / 99,148.48-136,833.16-56,715.20

Finding the Fourth Proportional to 99,148.48, 136,833.16 and 56,715.20

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Solution

The fourth proportional to 99,148.48, 136,833.16 and 56,715.20 is: 78,271.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,148.48 : 136,833.16 = 56,715.20 : x
  2. Step 2: Convert to fraction form
    99,148.48/136,833.16 = 56,715.20/x
  3. Step 3: Cross multiply
    99,148.48x = 136,833.16 × 56,715.20
  4. Step 4: Simplify right side
    99,148.48x = 7,760,520,036.03
  5. Step 5: Solve for x
    x = 7,760,520,036.03/99,148.48
  6. Step 6: Final answer
    x = 78,271.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.