Home / 145,909.13-201,354.54-78,841.13

Finding the Fourth Proportional to 145,909.13, 201,354.54 and 78,841.13

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Solution

The fourth proportional to 145,909.13, 201,354.54 and 78,841.13 is: 108,800.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,909.13 : 201,354.54 = 78,841.13 : x
  2. Step 2: Convert to fraction form
    145,909.13/201,354.54 = 78,841.13/x
  3. Step 3: Cross multiply
    145,909.13x = 201,354.54 × 78,841.13
  4. Step 4: Simplify right side
    145,909.13x = 15,875,019,464.23
  5. Step 5: Solve for x
    x = 15,875,019,464.23/145,909.13
  6. Step 6: Final answer
    x = 108,800.73

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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.