Home / 98,864.30-136,442.47-56,429.21

Finding the Fourth Proportional to 98,864.30, 136,442.47 and 56,429.21

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Solution

The fourth proportional to 98,864.30, 136,442.47 and 56,429.21 is: 77,877.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,864.30 : 136,442.47 = 56,429.21 : x
  2. Step 2: Convert to fraction form
    98,864.30/136,442.47 = 56,429.21/x
  3. Step 3: Cross multiply
    98,864.30x = 136,442.47 × 56,429.21
  4. Step 4: Simplify right side
    98,864.30x = 7,699,339,969.26
  5. Step 5: Solve for x
    x = 7,699,339,969.26/98,864.30
  6. Step 6: Final answer
    x = 77,877.86

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1.5x scale

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.