Home / 128,117.03-192,293.10-64,981.08

Finding the Fourth Proportional to 128,117.03, 192,293.10 and 64,981.08

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Solution

The fourth proportional to 128,117.03, 192,293.10 and 64,981.08 is: 97,531.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,117.03 : 192,293.10 = 64,981.08 : x
  2. Step 2: Convert to fraction form
    128,117.03/192,293.10 = 64,981.08/x
  3. Step 3: Cross multiply
    128,117.03x = 192,293.10 × 64,981.08
  4. Step 4: Simplify right side
    128,117.03x = 12,495,413,314.55
  5. Step 5: Solve for x
    x = 12,495,413,314.55/128,117.03
  6. Step 6: Final answer
    x = 97,531.25

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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.