Home / 126,528.32-189,812.16-42,262.40

Finding the Fourth Proportional to 126,528.32, 189,812.16 and 42,262.40

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Solution

The fourth proportional to 126,528.32, 189,812.16 and 42,262.40 is: 63,400.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,528.32 : 189,812.16 = 42,262.40 : x
  2. Step 2: Convert to fraction form
    126,528.32/189,812.16 = 42,262.40/x
  3. Step 3: Cross multiply
    126,528.32x = 189,812.16 × 42,262.40
  4. Step 4: Simplify right side
    126,528.32x = 8,021,917,430.78
  5. Step 5: Solve for x
    x = 8,021,917,430.78/126,528.32
  6. Step 6: Final answer
    x = 63,400.17

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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.