Home / 120,688.65-180,220.25-98,545.23

Finding the Fourth Proportional to 120,688.65, 180,220.25 and 98,545.23

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Solution

The fourth proportional to 120,688.65, 180,220.25 and 98,545.23 is: 147,154.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,688.65 : 180,220.25 = 98,545.23 : x
  2. Step 2: Convert to fraction form
    120,688.65/180,220.25 = 98,545.23/x
  3. Step 3: Cross multiply
    120,688.65x = 180,220.25 × 98,545.23
  4. Step 4: Simplify right side
    120,688.65x = 17,759,846,233.27
  5. Step 5: Solve for x
    x = 17,759,846,233.27/120,688.65
  6. Step 6: Final answer
    x = 147,154.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.