Home / 165,513.61-248,422.63-128,312.74

Finding the Fourth Proportional to 165,513.61, 248,422.63 and 128,312.74

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Solution

The fourth proportional to 165,513.61, 248,422.63 and 128,312.74 is: 192,587.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,513.61 : 248,422.63 = 128,312.74 : x
  2. Step 2: Convert to fraction form
    165,513.61/248,422.63 = 128,312.74/x
  3. Step 3: Cross multiply
    165,513.61x = 248,422.63 × 128,312.74
  4. Step 4: Simplify right side
    165,513.61x = 31,875,787,271.17
  5. Step 5: Solve for x
    x = 31,875,787,271.17/165,513.61
  6. Step 6: Final answer
    x = 192,587.11

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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.