Home / 105,509.12-145,612.48-63,066.74

Finding the Fourth Proportional to 105,509.12, 145,612.48 and 63,066.74

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Solution

The fourth proportional to 105,509.12, 145,612.48 and 63,066.74 is: 87,038.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,509.12 : 145,612.48 = 63,066.74 : x
  2. Step 2: Convert to fraction form
    105,509.12/145,612.48 = 63,066.74/x
  3. Step 3: Cross multiply
    105,509.12x = 145,612.48 × 63,066.74
  4. Step 4: Simplify right side
    105,509.12x = 9,183,304,416.92
  5. Step 5: Solve for x
    x = 9,183,304,416.92/105,509.12
  6. Step 6: Final answer
    x = 87,038.02

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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.