Home / 116,115.24-160,288.02-78,440.52

Finding the Fourth Proportional to 116,115.24, 160,288.02 and 78,440.52

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Solution

The fourth proportional to 116,115.24, 160,288.02 and 78,440.52 is: 108,281.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,115.24 : 160,288.02 = 78,440.52 : x
  2. Step 2: Convert to fraction form
    116,115.24/160,288.02 = 78,440.52/x
  3. Step 3: Cross multiply
    116,115.24x = 160,288.02 × 78,440.52
  4. Step 4: Simplify right side
    116,115.24x = 12,573,075,638.57
  5. Step 5: Solve for x
    x = 12,573,075,638.57/116,115.24
  6. Step 6: Final answer
    x = 108,281.01

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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.