Home / 124,424.40-186,636.60-77,077.20

Finding the Fourth Proportional to 124,424.40, 186,636.60 and 77,077.20

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Solution

The fourth proportional to 124,424.40, 186,636.60 and 77,077.20 is: 115,615.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,424.40 : 186,636.60 = 77,077.20 : x
  2. Step 2: Convert to fraction form
    124,424.40/186,636.60 = 77,077.20/x
  3. Step 3: Cross multiply
    124,424.40x = 186,636.60 × 77,077.20
  4. Step 4: Simplify right side
    124,424.40x = 14,385,426,545.52
  5. Step 5: Solve for x
    x = 14,385,426,545.52/124,424.40
  6. Step 6: Final answer
    x = 115,615.80

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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.