Home / 112,898.64-155,800.08-61,215.78

Finding the Fourth Proportional to 112,898.64, 155,800.08 and 61,215.78

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Solution

The fourth proportional to 112,898.64, 155,800.08 and 61,215.78 is: 84,477.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,898.64 : 155,800.08 = 61,215.78 : x
  2. Step 2: Convert to fraction form
    112,898.64/155,800.08 = 61,215.78/x
  3. Step 3: Cross multiply
    112,898.64x = 155,800.08 × 61,215.78
  4. Step 4: Simplify right side
    112,898.64x = 9,537,423,421.26
  5. Step 5: Solve for x
    x = 9,537,423,421.26/112,898.64
  6. Step 6: Final answer
    x = 84,477.75

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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.