Home / 105,089.69-145,027.28-57,345.66

Finding the Fourth Proportional to 105,089.69, 145,027.28 and 57,345.66

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Solution

The fourth proportional to 105,089.69, 145,027.28 and 57,345.66 is: 79,138.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,089.69 : 145,027.28 = 57,345.66 : x
  2. Step 2: Convert to fraction form
    105,089.69/145,027.28 = 57,345.66/x
  3. Step 3: Cross multiply
    105,089.69x = 145,027.28 × 57,345.66
  4. Step 4: Simplify right side
    105,089.69x = 8,316,684,802.88
  5. Step 5: Solve for x
    x = 8,316,684,802.88/105,089.69
  6. Step 6: Final answer
    x = 79,138.92

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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.