Home / 128,685.08-177,587.16-72,095.24

Finding the Fourth Proportional to 128,685.08, 177,587.16 and 72,095.24

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Solution

The fourth proportional to 128,685.08, 177,587.16 and 72,095.24 is: 99,492.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,685.08 : 177,587.16 = 72,095.24 : x
  2. Step 2: Convert to fraction form
    128,685.08/177,587.16 = 72,095.24/x
  3. Step 3: Cross multiply
    128,685.08x = 177,587.16 × 72,095.24
  4. Step 4: Simplify right side
    128,685.08x = 12,803,188,921.12
  5. Step 5: Solve for x
    x = 12,803,188,921.12/128,685.08
  6. Step 6: Final answer
    x = 99,492.41

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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.