Home / 145,363.68-218,129.76-61,117.20

Finding the Fourth Proportional to 145,363.68, 218,129.76 and 61,117.20

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Solution

The fourth proportional to 145,363.68, 218,129.76 and 61,117.20 is: 91,711.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,363.68 : 218,129.76 = 61,117.20 : x
  2. Step 2: Convert to fraction form
    145,363.68/218,129.76 = 61,117.20/x
  3. Step 3: Cross multiply
    145,363.68x = 218,129.76 × 61,117.20
  4. Step 4: Simplify right side
    145,363.68x = 13,331,480,167.87
  5. Step 5: Solve for x
    x = 13,331,480,167.87/145,363.68
  6. Step 6: Final answer
    x = 91,711.22

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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.