Home / 142,916.40-197,225.16-79,260.08

Finding the Fourth Proportional to 142,916.40, 197,225.16 and 79,260.08

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Solution

The fourth proportional to 142,916.40, 197,225.16 and 79,260.08 is: 109,379.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,916.40 : 197,225.16 = 79,260.08 : x
  2. Step 2: Convert to fraction form
    142,916.40/197,225.16 = 79,260.08/x
  3. Step 3: Cross multiply
    142,916.40x = 197,225.16 × 79,260.08
  4. Step 4: Simplify right side
    142,916.40x = 15,632,081,959.61
  5. Step 5: Solve for x
    x = 15,632,081,959.61/142,916.40
  6. Step 6: Final answer
    x = 109,379.20

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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.