Home / 105,089.04-145,021.67-57,343.18

Finding the Fourth Proportional to 105,089.04, 145,021.67 and 57,343.18

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Solution

The fourth proportional to 105,089.04, 145,021.67 and 57,343.18 is: 79,132.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,089.04 : 145,021.67 = 57,343.18 : x
  2. Step 2: Convert to fraction form
    105,089.04/145,021.67 = 57,343.18/x
  3. Step 3: Cross multiply
    105,089.04x = 145,021.67 × 57,343.18
  4. Step 4: Simplify right side
    105,089.04x = 8,316,003,726.71
  5. Step 5: Solve for x
    x = 8,316,003,726.71/105,089.04
  6. Step 6: Final answer
    x = 79,132.93

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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.