Home / 142,813.50-197,000.55-89,072.70

Finding the Fourth Proportional to 142,813.50, 197,000.55 and 89,072.70

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Solution

The fourth proportional to 142,813.50, 197,000.55 and 89,072.70 is: 122,869.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,813.50 : 197,000.55 = 89,072.70 : x
  2. Step 2: Convert to fraction form
    142,813.50/197,000.55 = 89,072.70/x
  3. Step 3: Cross multiply
    142,813.50x = 197,000.55 × 89,072.70
  4. Step 4: Simplify right side
    142,813.50x = 17,547,370,889.99
  5. Step 5: Solve for x
    x = 17,547,370,889.99/142,813.50
  6. Step 6: Final answer
    x = 122,869.13

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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.