Home / 115,068.60-172,381.77-70,565.58

Finding the Fourth Proportional to 115,068.60, 172,381.77 and 70,565.58

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Solution

The fourth proportional to 115,068.60, 172,381.77 and 70,565.58 is: 105,712.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,068.60 : 172,381.77 = 70,565.58 : x
  2. Step 2: Convert to fraction form
    115,068.60/172,381.77 = 70,565.58/x
  3. Step 3: Cross multiply
    115,068.60x = 172,381.77 × 70,565.58
  4. Step 4: Simplify right side
    115,068.60x = 12,164,219,581.48
  5. Step 5: Solve for x
    x = 12,164,219,581.48/115,068.60
  6. Step 6: Final answer
    x = 105,712.76

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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.