Home / 91,437.84-137,386.80-58,172.76

Finding the Fourth Proportional to 91,437.84, 137,386.80 and 58,172.76

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Solution

The fourth proportional to 91,437.84, 137,386.80 and 58,172.76 is: 87,405.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,437.84 : 137,386.80 = 58,172.76 : x
  2. Step 2: Convert to fraction form
    91,437.84/137,386.80 = 58,172.76/x
  3. Step 3: Cross multiply
    91,437.84x = 137,386.80 × 58,172.76
  4. Step 4: Simplify right side
    91,437.84x = 7,992,169,343.57
  5. Step 5: Solve for x
    x = 7,992,169,343.57/91,437.84
  6. Step 6: Final answer
    x = 87,405.49

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1.5x scale

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.