Home / 160,155.95-240,378.80-85,339.28

Finding the Fourth Proportional to 160,155.95, 240,378.80 and 85,339.28

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Solution

The fourth proportional to 160,155.95, 240,378.80 and 85,339.28 is: 128,086.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,155.95 : 240,378.80 = 85,339.28 : x
  2. Step 2: Convert to fraction form
    160,155.95/240,378.80 = 85,339.28/x
  3. Step 3: Cross multiply
    160,155.95x = 240,378.80 × 85,339.28
  4. Step 4: Simplify right side
    160,155.95x = 20,513,752,090.67
  5. Step 5: Solve for x
    x = 20,513,752,090.67/160,155.95
  6. Step 6: Final answer
    x = 128,086.11

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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.