Home / 145,113.52-200,258.88-87,744.64

Finding the Fourth Proportional to 145,113.52, 200,258.88 and 87,744.64

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Solution

The fourth proportional to 145,113.52, 200,258.88 and 87,744.64 is: 121,088.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,113.52 : 200,258.88 = 87,744.64 : x
  2. Step 2: Convert to fraction form
    145,113.52/200,258.88 = 87,744.64/x
  3. Step 3: Cross multiply
    145,113.52x = 200,258.88 × 87,744.64
  4. Step 4: Simplify right side
    145,113.52x = 17,571,643,332.40
  5. Step 5: Solve for x
    x = 17,571,643,332.40/145,113.52
  6. Step 6: Final answer
    x = 121,088.95

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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.