Home / 124,628.40-171,985.98-76,862.64

Finding the Fourth Proportional to 124,628.40, 171,985.98 and 76,862.64

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Solution

The fourth proportional to 124,628.40, 171,985.98 and 76,862.64 is: 106,069.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,628.40 : 171,985.98 = 76,862.64 : x
  2. Step 2: Convert to fraction form
    124,628.40/171,985.98 = 76,862.64/x
  3. Step 3: Cross multiply
    124,628.40x = 171,985.98 × 76,862.64
  4. Step 4: Simplify right side
    124,628.40x = 13,219,296,465.79
  5. Step 5: Solve for x
    x = 13,219,296,465.79/124,628.40
  6. Step 6: Final answer
    x = 106,069.70

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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.