Home / 103,639.60-155,461.92-77,510.26

Finding the Fourth Proportional to 103,639.60, 155,461.92 and 77,510.26

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Solution

The fourth proportional to 103,639.60, 155,461.92 and 77,510.26 is: 116,267.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,639.60 : 155,461.92 = 77,510.26 : x
  2. Step 2: Convert to fraction form
    103,639.60/155,461.92 = 77,510.26/x
  3. Step 3: Cross multiply
    103,639.60x = 155,461.92 × 77,510.26
  4. Step 4: Simplify right side
    103,639.60x = 12,049,893,839.30
  5. Step 5: Solve for x
    x = 12,049,893,839.30/103,639.60
  6. Step 6: Final answer
    x = 116,267.27

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1.5x scale

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.