Home / 112,442.52-155,155.66-72,210.78

Finding the Fourth Proportional to 112,442.52, 155,155.66 and 72,210.78

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Solution

The fourth proportional to 112,442.52, 155,155.66 and 72,210.78 is: 99,641.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,442.52 : 155,155.66 = 72,210.78 : x
  2. Step 2: Convert to fraction form
    112,442.52/155,155.66 = 72,210.78/x
  3. Step 3: Cross multiply
    112,442.52x = 155,155.66 × 72,210.78
  4. Step 4: Simplify right side
    112,442.52x = 11,203,911,230.01
  5. Step 5: Solve for x
    x = 11,203,911,230.01/112,442.52
  6. Step 6: Final answer
    x = 99,641.23

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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.