Home / 145,545.76-200,837.08-81,882.48

Finding the Fourth Proportional to 145,545.76, 200,837.08 and 81,882.48

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Solution

The fourth proportional to 145,545.76, 200,837.08 and 81,882.48 is: 112,988.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,545.76 : 200,837.08 = 81,882.48 : x
  2. Step 2: Convert to fraction form
    145,545.76/200,837.08 = 81,882.48/x
  3. Step 3: Cross multiply
    145,545.76x = 200,837.08 × 81,882.48
  4. Step 4: Simplify right side
    145,545.76x = 16,445,038,186.36
  5. Step 5: Solve for x
    x = 16,445,038,186.36/145,545.76
  6. Step 6: Final answer
    x = 112,988.78

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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.