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Finding the Fourth Proportional to 121,369.40, 181,981.20 and 62,320.40

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Solution

The fourth proportional to 121,369.40, 181,981.20 and 62,320.40 is: 93,443.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,369.40 : 181,981.20 = 62,320.40 : x
  2. Step 2: Convert to fraction form
    121,369.40/181,981.20 = 62,320.40/x
  3. Step 3: Cross multiply
    121,369.40x = 181,981.20 × 62,320.40
  4. Step 4: Simplify right side
    121,369.40x = 11,341,141,176.48
  5. Step 5: Solve for x
    x = 11,341,141,176.48/121,369.40
  6. Step 6: Final answer
    x = 93,443.17

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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.