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Finding the Fourth Proportional to 105,700.61, 158,550.91 and 91,426.67

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Solution

The fourth proportional to 105,700.61, 158,550.91 and 91,426.67 is: 137,140.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,700.61 : 158,550.91 = 91,426.67 : x
  2. Step 2: Convert to fraction form
    105,700.61/158,550.91 = 91,426.67/x
  3. Step 3: Cross multiply
    105,700.61x = 158,550.91 × 91,426.67
  4. Step 4: Simplify right side
    105,700.61x = 14,495,780,934.02
  5. Step 5: Solve for x
    x = 14,495,780,934.02/105,700.61
  6. Step 6: Final answer
    x = 137,140.00

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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.